31131113211104 has 24 divisors (see below), whose sum is σ = 61665387605640. Its totient is φ = 15470062390656.

The previous prime is 31131113211041. The next prime is 31131113211131. The reversal of 31131113211104 is 40111231113113.

It is a self number, because there is not a number n which added to its sum of digits gives 31131113211104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2984188919 + ... + 2984199350.

It is an arithmetic number, because the mean of its divisors is an integer number (2569391150235).

Almost surely, 2^{31131113211104} is an apocalyptic number.

It is an amenable number.

31131113211104 is a deficient number, since it is larger than the sum of its proper divisors (30534274394536).

31131113211104 is a wasteful number, since it uses less digits than its factorization.

31131113211104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5968388442 (or 5968388434 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 31131113211104 its reverse (40111231113113), we get a palindrome (71242344324217).

The spelling of 31131113211104 in words is "thirty-one trillion, one hundred thirty-one billion, one hundred thirteen million, two hundred eleven thousand, one hundred four".