31695442645 has 16 divisors (see below), whose sum is σ = 39072159360. Its totient is φ = 24664941504.

The previous prime is 31695442453. The next prime is 31695442759. The reversal of 31695442645 is 54624459613.

It is a cyclic number.

It is not a de Polignac number, because 31695442645 - 2⁹ = 31695442133 is a prime.

It is a congruent number.

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, 817816 + ... + 855694.

It is an arithmetic number, because the mean of its divisors is an integer number (2442009960).

Almost surely, 2^31695442645 is an apocalyptic number.

It is an amenable number.

31695442645 is a deficient number, since it is larger than the sum of its proper divisors (7376716715).

31695442645 is a wasteful number, since it uses less digits than its factorization.

31695442645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42444.

The product of its digits is 3110400, while the sum is 49.

The spelling of 31695442645 in words is "thirty-one billion, six hundred ninety-five million, four hundred forty-two thousand, six hundred forty-five".