31313340016 has 20 divisors (see below), whose sum is σ = 69336681712. Its totient is φ = 13420002816.

The previous prime is 31313340011. The next prime is 31313340017. The reversal of 31313340016 is 61004331313.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313340011) 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, 139791585 + ... + 139791808.

Almost surely, 2^31313340016 is an apocalyptic number.

It is an amenable number.

31313340016 is an abundant number, since it is smaller than the sum of its proper divisors (38023341696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31313340016 is a wasteful number, since it uses less digits than its factorization.

31313340016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279583408 (or 279583402 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31313340016 its reverse (61004331313), we get a palindrome (92317671329).

The spelling of 31313340016 in words is "thirty-one billion, three hundred thirteen million, three hundred forty thousand, sixteen".