31064277157 has 4 divisors (see below), whose sum is σ = 32891587596. Its totient is φ = 29236966720.

The previous prime is 31064277137. The next prime is 31064277173. The reversal of 31064277157 is 75177246013.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75177246013 = 127 ⋅591946819.

It can be written as a sum of positive squares in 2 ways, for example, as 9597924961 + 21466352196 = 97969^2 + 146514^2 .

It is a cyclic number.

It is not a de Polignac number, because 31064277157 - 2³¹ = 28916793509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31064277137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913655194 + ... + 913655227.

It is an arithmetic number, because the mean of its divisors is an integer number (8222896899).

Almost surely, 2^31064277157 is an apocalyptic number.

It is an amenable number.

31064277157 is a deficient number, since it is larger than the sum of its proper divisors (1827310439).

31064277157 is a wasteful number, since it uses less digits than its factorization.

31064277157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827310438.

The product of its (nonzero) digits is 246960, while the sum is 43.

The spelling of 31064277157 in words is "thirty-one billion, sixty-four million, two hundred seventy-seven thousand, one hundred fifty-seven".