13012312221031 has 16 divisors (see below), whose sum is σ = 14036535927040. Its totient is φ = 12022877018880.

The previous prime is 13012312221011. The next prime is 13012312221037. The reversal of 13012312221031 is 13012221321031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13012312221031 is a prime.

It is a super-2 number, since 2×13012312221031² (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 = 13012312220993 and 13012312221011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012312221037) 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, 11282955 + ... + 12382636.

It is an arithmetic number, because the mean of its divisors is an integer number (877283495440).

Almost surely, 2^{13012312221031} is an apocalyptic number.

13012312221031 is a deficient number, since it is larger than the sum of its proper divisors (1024223706009).

13012312221031 is a wasteful number, since it uses less digits than its factorization.

13012312221031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23666326.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13012312221031 its reverse (13012221321031), we get a palindrome (26024533542062).

The spelling of 13012312221031 in words is "thirteen trillion, twelve billion, three hundred twelve million, two hundred twenty-one thousand, thirty-one".