31566542112 has 144 divisors (see below), whose sum is σ = 105900867072. Its totient is φ = 8728058880.

The previous prime is 31566542087. The next prime is 31566542113. The reversal of 31566542112 is 21124566513.

31566542112 is a `hidden beast` number, since 31 + 566 + 54 + 2 + 1 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (31566542113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190053 + ... + 315044.

It is an arithmetic number, because the mean of its divisors is an integer number (735422688).

Almost surely, 2^31566542112 is an apocalyptic number.

31566542112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31566542112 is an abundant number, since it is smaller than the sum of its proper divisors (74334324960).

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

31566542112 is a wasteful number, since it uses less digits than its factorization.

31566542112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505151 (or 505140 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 31566542112 in words is "thirty-one billion, five hundred sixty-six million, five hundred forty-two thousand, one hundred twelve".