31577352642 has 48 divisors (see below), whose sum is σ = 74665648512. Its totient is φ = 9565270560.

The previous prime is 31577352601. The next prime is 31577352679. The reversal of 31577352642 is 24625377513.

31577352642 is a `hidden beast` number, since 3 + 1 + 57 + 73 + 526 + 4 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519048 + ... + 576684.

It is an arithmetic number, because the mean of its divisors is an integer number (1555534344).

Almost surely, 2^31577352642 is an apocalyptic number.

31577352642 is an abundant number, since it is smaller than the sum of its proper divisors (43088295870).

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

31577352642 is a wasteful number, since it uses less digits than its factorization.

31577352642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60423 (or 60420 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The spelling of 31577352642 in words is "thirty-one billion, five hundred seventy-seven million, three hundred fifty-two thousand, six hundred forty-two".