31514064642 has 24 divisors (see below), whose sum is σ = 68956521660. Its totient is φ = 10400680800.

The previous prime is 31514064613. The next prime is 31514064667. The reversal of 31514064642 is 24646041513.

31514064642 is a `hidden beast` number, since 3 + 1 + 5 + 1 + 4 + 0 + 6 + 4 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31400194401 + 113870241 = 177201^2 + 10671^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31514064597 and 31514064606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8665417 + ... + 8669052.

Almost surely, 2^31514064642 is an apocalyptic number.

31514064642 is an abundant number, since it is smaller than the sum of its proper divisors (37442457018).

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

31514064642 is a wasteful number, since it uses less digits than its factorization.

31514064642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17334578 (or 17334575 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 31514064642 in words is "thirty-one billion, five hundred fourteen million, sixty-four thousand, six hundred forty-two".