19873360431 has 12 divisors (see below), whose sum is σ = 28931997952. Its totient is φ = 13144584096.

The previous prime is 19873360393. The next prime is 19873360447. The reversal of 19873360431 is 13406337891.

19873360431 is a `hidden beast` number, since 1 + 9 + 8 + 7 + 3 + 3 + 604 + 31 = 666.

It is not a de Polignac number, because 19873360431 - 2¹¹ = 19873358383 is a prime.

It is a super-2 number, since 2×19873360431² (a number of 21 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 (19873360831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8692366 + ... + 8694651.

Almost surely, 2^19873360431 is an apocalyptic number.

19873360431 is a deficient number, since it is larger than the sum of its proper divisors (9058637521).

19873360431 is a wasteful number, since it uses less digits than its factorization.

19873360431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17387150 (or 17387147 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 19873360431 in words is "nineteen billion, eight hundred seventy-three million, three hundred sixty thousand, four hundred thirty-one".