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100231210031 = 2338911202773
BaseRepresentation
bin101110101011000111…
…1101110010000101111
3100120201021201000210012
41131112033232100233
53120233142210111
6114013502403435
710145552141141
oct1352617562057
9316637630705
10100231210031
11395649a5677
121751329057b
1395b46a3704
144bcba48c91
1529196ab48b
hex17563ee42f

100231210031 has 8 divisors (see below), whose sum is σ = 104857964640. Its totient is φ = 95626861792.

The previous prime is 100231209983. The next prime is 100231210063. The reversal of 100231210031 is 130012132001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-100231210031 is a prime.

It is a super-2 number, since 2×1002312100312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100231209988 and 100231210015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100231210091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5592440 + ... + 5610333.

It is an arithmetic number, because the mean of its divisors is an integer number (13107245580).

Almost surely, 2100231210031 is an apocalyptic number.

100231210031 is a deficient number, since it is larger than the sum of its proper divisors (4626754609).

100231210031 is a wasteful number, since it uses less digits than its factorization.

100231210031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11203185.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 100231210031 its reverse (130012132001), we get a palindrome (230243342032).

The spelling of 100231210031 in words is "one hundred billion, two hundred thirty-one million, two hundred ten thousand, thirty-one".

Divisors: 1 23 389 8947 11202773 257663779 4357878697 100231210031