93820688931 has 4 divisors (see below), whose sum is σ = 125094251912. Its totient is φ = 62547125952.

The previous prime is 93820688893. The next prime is 93820688953. The reversal of 93820688931 is 13988602839.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 93820688931 - 2⁹ = 93820688419 is a prime.

It is a super-2 number, since 2×93820688931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93820688131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15636781486 + ... + 15636781491.

It is an arithmetic number, because the mean of its divisors is an integer number (31273562978).

Almost surely, 2^93820688931 is an apocalyptic number.

93820688931 is a deficient number, since it is larger than the sum of its proper divisors (31273562981).

93820688931 is a wasteful number, since it uses less digits than its factorization.

93820688931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31273562980.

The product of its (nonzero) digits is 4478976, while the sum is 57.

The spelling of 93820688931 in words is "ninety-three billion, eight hundred twenty million, six hundred eighty-eight thousand, nine hundred thirty-one".