31661660162 has 32 divisors (see below), whose sum is σ = 52330924800. Its totient is φ = 14247150480.

The previous prime is 31661660153. The next prime is 31661660171. The reversal of 31661660162 is 26106616613.

It is an interprime number because it is at equal distance from previous prime (31661660153) and next prime (31661660171).

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 15 ways as a sum of consecutive naturals, for example, 4108589 + ... + 4116287.

It is an arithmetic number, because the mean of its divisors is an integer number (1635341400).

Almost surely, 2^31661660162 is an apocalyptic number.

31661660162 is a deficient number, since it is larger than the sum of its proper divisors (20669264638).

31661660162 is a wasteful number, since it uses less digits than its factorization.

31661660162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9566.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 31661660162 in words is "thirty-one billion, six hundred sixty-one million, six hundred sixty thousand, one hundred sixty-two".