31118282450956 has 18 divisors (see below), whose sum is σ = 57474002285700. Its totient is φ = 14740239055032.

The previous prime is 31118282450951. The next prime is 31118282450989. The reversal of 31118282450956 is 65905428281113.

It is a happy number.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 31118282450897 and 31118282450906.

It is not an unprimeable number, because it can be changed into a prime (31118282450951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10775027106 + ... + 10775029993.

Almost surely, 2^{31118282450956} is an apocalyptic number.

It is an amenable number.

31118282450956 is a deficient number, since it is larger than the sum of its proper divisors (26355719834744).

31118282450956 is a wasteful number, since it uses less digits than its factorization.

31118282450956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21550057141 (or 21550057120 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 31118282450956 in words is "thirty-one trillion, one hundred eighteen billion, two hundred eighty-two million, four hundred fifty thousand, nine hundred fifty-six".