31031131100313 has 8 divisors (see below), whose sum is σ = 41494077322848. Its totient is φ = 20627802805664.

The previous prime is 31031131100297. The next prime is 31031131100323. The reversal of 31031131100313 is 31300113113013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31031131100313 - 2⁴ = 31031131100297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31031131100313.

It is not an unprimeable number, because it can be changed into a prime (31031131100323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14904480756 + ... + 14904482837.

It is an arithmetic number, because the mean of its divisors is an integer number (5186759665356).

Almost surely, 2^{31031131100313} is an apocalyptic number.

It is an amenable number.

31031131100313 is a deficient number, since it is larger than the sum of its proper divisors (10462946222535).

31031131100313 is a wasteful number, since it uses less digits than its factorization.

31031131100313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29808963943.

The product of its (nonzero) digits is 243, while the sum is 21.

Adding to 31031131100313 its reverse (31300113113013), we get a palindrome (62331244213326).

The spelling of 31031131100313 in words is "thirty-one trillion, thirty-one billion, one hundred thirty-one million, one hundred thousand, three hundred thirteen".