73993190831 has 18 divisors (see below), whose sum is σ = 89144167320. Its totient is φ = 61235710032.

The previous prime is 73993190827. The next prime is 73993190837. The reversal of 73993190831 is 13809139937.

It is not a de Polignac number, because 73993190831 - 2² = 73993190827 is a prime.

It is a super-2 number, since 2×73993190831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73993190837) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 856571 + ... + 938988.

It is an arithmetic number, because the mean of its divisors is an integer number (4952453740).

Almost surely, 2^73993190831 is an apocalyptic number.

73993190831 is a deficient number, since it is larger than the sum of its proper divisors (15150976489).

73993190831 is a wasteful number, since it uses less digits than its factorization.

73993190831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795631 (or 1795595 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 53.

The spelling of 73993190831 in words is "seventy-three billion, nine hundred ninety-three million, one hundred ninety thousand, eight hundred thirty-one".