20074355931 has 64 divisors (see below), whose sum is σ = 32650526720. Its totient is φ = 10715950080.

The previous prime is 20074355891. The next prime is 20074355971. The reversal of 20074355931 is 13955347002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20074355891) and next prime (20074355971).

It is not a de Polignac number, because 20074355931 - 2¹⁰ = 20074354907 is a prime.

It is a super-2 number, since 2×20074355931² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20074355931.

It is not an unprimeable number, because it can be changed into a prime (20074355971) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12809910 + ... + 12811476.

It is an arithmetic number, because the mean of its divisors is an integer number (510164480).

Almost surely, 2^20074355931 is an apocalyptic number.

20074355931 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20074355931 is a deficient number, since it is larger than the sum of its proper divisors (12576170789).

20074355931 is a wasteful number, since it uses less digits than its factorization.

20074355931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024.

The product of its (nonzero) digits is 113400, while the sum is 39.

The spelling of 20074355931 in words is "twenty billion, seventy-four million, three hundred fifty-five thousand, nine hundred thirty-one".