31661660152 has 16 divisors (see below), whose sum is σ = 59370400440. Its totient is φ = 15829553376.

The previous prime is 31661660143. The next prime is 31661660153. The reversal of 31661660152 is 25106616613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31661660153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49743 + ... + 256510.

Almost surely, 2^31661660152 is an apocalyptic number.

It is an amenable number.

31661660152 is a deficient number, since it is larger than the sum of its proper divisors (27708740288).

31661660152 is a wasteful number, since it uses less digits than its factorization.

31661660152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319182 (or 319178 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 31661660152 in words is "thirty-one billion, six hundred sixty-one million, six hundred sixty thousand, one hundred fifty-two".