13112313121231 has 6 divisors (see below), whose sum is σ = 13928996983760. Its totient is φ = 12341000584416.

The previous prime is 13112313121223. The next prime is 13112313121253. The reversal of 13112313121231 is 13212131321131.

It is not a de Polignac number, because 13112313121231 - 2³ = 13112313121223 is a prime.

It is a super-2 number, since 2×13112313121231² (a number of 27 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 = 13112313121196 and 13112313121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112313121261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22685662551 + ... + 22685663128.

Almost surely, 2^{13112313121231} is an apocalyptic number.

13112313121231 is a deficient number, since it is larger than the sum of its proper divisors (816683862529).

13112313121231 is an equidigital number, since it uses as much as digits as its factorization.

13112313121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45371325713 (or 45371325696 counting only the distinct ones).

The product of its digits is 648, while the sum is 25.

Adding to 13112313121231 its reverse (13212131321131), we get a palindrome (26324444442362).

The spelling of 13112313121231 in words is "thirteen trillion, one hundred twelve billion, three hundred thirteen million, one hundred twenty-one thousand, two hundred thirty-one".