31845307761896 has 16 divisors (see below), whose sum is σ = 60836554923300. Its totient is φ = 15622226449024.

The previous prime is 31845307761893. The next prime is 31845307762057. The reversal of 31845307761896 is 69816770354813.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29804895496996 + 2040412264900 = 5459386^2 + 1428430^2 .

It is not an unprimeable number, because it can be changed into a prime (31845307761893) 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, 37553428541 + ... + 37553429388.

Almost surely, 2^{31845307761896} is an apocalyptic number.

It is an amenable number.

31845307761896 is a deficient number, since it is larger than the sum of its proper divisors (28991247161404).

31845307761896 is a wasteful number, since it uses less digits than its factorization.

31845307761896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75106857988 (or 75106857984 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 68.

The spelling of 31845307761896 in words is "thirty-one trillion, eight hundred forty-five billion, three hundred seven million, seven hundred sixty-one thousand, eight hundred ninety-six".