13100031231231 has 16 divisors (see below), whose sum is σ = 19962031040000. Its totient is φ = 7485702624288.

The previous prime is 13100031231227. The next prime is 13100031231253. The reversal of 13100031231231 is 13213213000131.

It is a happy number.

It is not a de Polignac number, because 13100031231231 - 2² = 13100031231227 is a prime.

It is a super-2 number, since 2×13100031231231² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 13100031231198 and 13100031231207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13100031231731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4946145 + ... + 7117893.

It is an arithmetic number, because the mean of its divisors is an integer number (1247626940000).

Almost surely, 2^{13100031231231} is an apocalyptic number.

13100031231231 is a deficient number, since it is larger than the sum of its proper divisors (6861999808769).

13100031231231 is a wasteful number, since it uses less digits than its factorization.

13100031231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458998.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 13100031231231 its reverse (13213213000131), we get a palindrome (26313244231362).

The spelling of 13100031231231 in words is "thirteen trillion, one hundred billion, thirty-one million, two hundred thirty-one thousand, two hundred thirty-one".