31452916138 has 32 divisors (see below), whose sum is σ = 56953036800. Its totient is φ = 12741608880.

The previous prime is 31452916127. The next prime is 31452916147. The reversal of 31452916138 is 83161925413.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 31452916094 and 31452916103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824038 + ... + 861361.

It is an arithmetic number, because the mean of its divisors is an integer number (1779782400).

Almost surely, 2^31452916138 is an apocalyptic number.

31452916138 is a deficient number, since it is larger than the sum of its proper divisors (25500120662).

31452916138 is a wasteful number, since it uses less digits than its factorization.

31452916138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685482.

The product of its digits is 155520, while the sum is 43.

The spelling of 31452916138 in words is "thirty-one billion, four hundred fifty-two million, nine hundred sixteen thousand, one hundred thirty-eight".