31206159672 has 64 divisors (see below), whose sum is σ = 81314088960. Its totient is φ = 9968745600.

The previous prime is 31206159661. The next prime is 31206159679. The reversal of 31206159672 is 27695160213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31206159679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126979 + ... + 280242.

It is an arithmetic number, because the mean of its divisors is an integer number (1270532640).

Almost surely, 2^31206159672 is an apocalyptic number.

It is an amenable number.

31206159672 is an abundant number, since it is smaller than the sum of its proper divisors (50107929288).

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

31206159672 is a wasteful number, since it uses less digits than its factorization.

31206159672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407364 (or 407360 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 31206159672 in words is "thirty-one billion, two hundred six million, one hundred fifty-nine thousand, six hundred seventy-two".