3992920031931 has 4 divisors (see below), whose sum is σ = 5323893375912. Its totient is φ = 2661946687952.

The previous prime is 3992920031887. The next prime is 3992920031957. The reversal of 3992920031931 is 1391300292993.

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

It is a cyclic number.

It is not a de Polignac number, because 3992920031931 - 2¹³ = 3992920023739 is a prime.

It is a super-2 number, since 2×3992920031931² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3992920031981) 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, 665486671986 + ... + 665486671991.

It is an arithmetic number, because the mean of its divisors is an integer number (1330973343978).

Almost surely, 2^{3992920031931} is an apocalyptic number.

3992920031931 is a deficient number, since it is larger than the sum of its proper divisors (1330973343981).

3992920031931 is a wasteful number, since it uses less digits than its factorization.

3992920031931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330973343980.

The product of its (nonzero) digits is 708588, while the sum is 51.

The spelling of 3992920031931 in words is "three trillion, nine hundred ninety-two billion, nine hundred twenty million, thirty-one thousand, nine hundred thirty-one".