31616190161900 has 18 divisors (see below), whose sum is σ = 68607132651540. Its totient is φ = 12646476064720.

The previous prime is 31616190161893. The next prime is 31616190161999. The reversal of 31616190161900 is 916109161613.

It is a super-2 number, since 2×31616190161900² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 158080950710 + ... + 158080950909.

It is an arithmetic number, because the mean of its divisors is an integer number (3811507369530).

Almost surely, 2^{31616190161900} is an apocalyptic number.

It is an amenable number.

31616190161900 is an abundant number, since it is smaller than the sum of its proper divisors (36990942489640).

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

31616190161900 is a wasteful number, since it uses less digits than its factorization.

31616190161900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316161901633 (or 316161901626 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 44.

The spelling of 31616190161900 in words is "thirty-one trillion, six hundred sixteen billion, one hundred ninety million, one hundred sixty-one thousand, nine hundred".