31128765540836 has 96 divisors (see below), whose sum is σ = 58083637248000. Its totient is φ = 14566293802368.

The previous prime is 31128765540833. The next prime is 31128765540839. The reversal of 31128765540836 is 63804556782113.

It is an interprime number because it is at equal distance from previous prime (31128765540833) and next prime (31128765540839).

It is not an unprimeable number, because it can be changed into a prime (31128765540833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 573046085 + ... + 573100403.

It is an arithmetic number, because the mean of its divisors is an integer number (605037888000).

Almost surely, 2^{31128765540836} is an apocalyptic number.

It is an amenable number.

31128765540836 is a deficient number, since it is larger than the sum of its proper divisors (26954871707164).

31128765540836 is a wasteful number, since it uses less digits than its factorization.

31128765540836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55041 (or 55039 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 31128765540836 in words is "thirty-one trillion, one hundred twenty-eight billion, seven hundred sixty-five million, five hundred forty thousand, eight hundred thirty-six".