31120796155907 has 4 divisors (see below), whose sum is σ = 31120908480936. Its totient is φ = 31120683830880.

The previous prime is 31120796155861. The next prime is 31120796156053. The reversal of 31120796155907 is 70955169702113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31120796155907 - 2²² = 31120791961603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31120796152907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55745894 + ... + 56301387.

It is an arithmetic number, because the mean of its divisors is an integer number (7780227120234).

Almost surely, 2^{31120796155907} is an apocalyptic number.

31120796155907 is a deficient number, since it is larger than the sum of its proper divisors (112325029).

31120796155907 is a wasteful number, since it uses less digits than its factorization.

31120796155907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112325028.

The product of its (nonzero) digits is 3572100, while the sum is 56.

The spelling of 31120796155907 in words is "thirty-one trillion, one hundred twenty billion, seven hundred ninety-six million, one hundred fifty-five thousand, nine hundred seven".