20112396831 has 18 divisors (see below), whose sum is σ = 29251235832. Its totient is φ = 13316005800.

The previous prime is 20112396769. The next prime is 20112396833. The reversal of 20112396831 is 13869321102.

It is not a de Polignac number, because 20112396831 - 2¹⁸ = 20112134687 is a prime.

It is a super-2 number, since 2×20112396831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112396833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5226150 + ... + 5229996.

Almost surely, 2^20112396831 is an apocalyptic number.

20112396831 is a deficient number, since it is larger than the sum of its proper divisors (9138839001).

20112396831 is an frugal number, since it uses more digits than its factorization.

20112396831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7851 (or 4001 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 20112396831 in words is "twenty billion, one hundred twelve million, three hundred ninety-six thousand, eight hundred thirty-one".