12311021103031 has 128 divisors (see below), whose sum is σ = 15862699819008. Its totient is φ = 9311791104000.

The previous prime is 12311021103019. The next prime is 12311021103049. The reversal of 12311021103031 is 13030112011321.

It is not a de Polignac number, because 12311021103031 - 2⁹ = 12311021102519 is a prime.

It is a super-2 number, since 2×12311021103031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311021103131) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 25279303870 + ... + 25279304356.

It is an arithmetic number, because the mean of its divisors is an integer number (123927342336).

Almost surely, 2^{12311021103031} is an apocalyptic number.

12311021103031 is a deficient number, since it is larger than the sum of its proper divisors (3551678715977).

12311021103031 is a wasteful number, since it uses less digits than its factorization.

12311021103031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 12311021103031 its reverse (13030112011321), we get a palindrome (25341133114352).

The spelling of 12311021103031 in words is "twelve trillion, three hundred eleven billion, twenty-one million, one hundred three thousand, thirty-one".