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13010122231 = 87714834803
BaseRepresentation
bin11000001110111011…
…01011010111110111
31020120200211200112221
430013131223113313
5203121042402411
65550552023211
7640255133341
oct140735532767
936520750487
1013010122231
115576969437
122631091b07
1312c45070a2
148b5c42291
155122a1071
hex30776b5f7

13010122231 has 4 divisors (see below), whose sum is σ = 13024957912. Its totient is φ = 12995286552.

The previous prime is 13010122199. The next prime is 13010122249. The reversal of 13010122231 is 13222101031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13010122231 - 25 = 13010122199 is a prime.

It is a super-2 number, since 2×130101222312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13010122291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7416525 + ... + 7418278.

It is an arithmetic number, because the mean of its divisors is an integer number (3256239478).

Almost surely, 213010122231 is an apocalyptic number.

13010122231 is a deficient number, since it is larger than the sum of its proper divisors (14835681).

13010122231 is an equidigital number, since it uses as much as digits as its factorization.

13010122231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14835680.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13010122231 its reverse (13222101031), we get a palindrome (26232223262).

The spelling of 13010122231 in words is "thirteen billion, ten million, one hundred twenty-two thousand, two hundred thirty-one".

Divisors: 1 877 14834803 13010122231