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231112100022013 = 72211271509162053
BaseRepresentation
bin110100100011000111111010…
…101000000000011011111101
31010022022002201121201101112201
4310203013322220000123331
5220243020040101201023
62135311233311431501
766452204200151500
oct6443077250003375
91108262647641481
10231112100022013
1167704100422a91
1221b070a6825591
139bc5a1528b722
14410dc57491137
151babb51c45bad
hexd231faa006fd

231112100022013 has 48 divisors (see below), whose sum is σ = 271649901553920. Its totient is φ = 196042601462400.

The previous prime is 231112100021947. The next prime is 231112100022047. The reversal of 231112100022013 is 310220001211132.

231112100022013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2k-231112100022013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231112100022913) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1426070295 + ... + 1426232347.

It is an arithmetic number, because the mean of its divisors is an integer number (5659372949040).

Almost surely, 2231112100022013 is an apocalyptic number.

It is an amenable number.

231112100022013 is a deficient number, since it is larger than the sum of its proper divisors (40537801531907).

231112100022013 is a wasteful number, since it uses less digits than its factorization.

231112100022013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163058 (or 163051 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 231112100022013 its reverse (310220001211132), we get a palindrome (541332101233145).

The spelling of 231112100022013 in words is "two hundred thirty-one trillion, one hundred twelve billion, one hundred million, twenty-two thousand, thirteen".

Divisors: 1 7 49 211 271 509 1477 1897 3563 10339 13279 24941 57181 107399 137939 162053 400267 751793 965573 1134371 2801869 5262551 6759011 7940597 29105129 34193183 43916363 82484977 203735903 239352281 307414541 577394839 1426151321 1675465967 2151901787 4041763873 9266352593 17404330147 22353428767 64864468151 121830311029 156474001369 454051277057 852812177203 1095318009583 4716573469837 33016014288859 231112100022013