19713814431 has 16 divisors (see below), whose sum is σ = 27997933824. Its totient is φ = 12295378304.

The previous prime is 19713814427. The next prime is 19713814451. The reversal of 19713814431 is 13441831791.

It is a cyclic number.

It is not a de Polignac number, because 19713814431 - 2² = 19713814427 is a prime.

It is a super-2 number, since 2×19713814431² (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 (19713814451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1148805 + ... + 1165838.

It is an arithmetic number, because the mean of its divisors is an integer number (1749870864).

Almost surely, 2^19713814431 is an apocalyptic number.

19713814431 is a deficient number, since it is larger than the sum of its proper divisors (8284119393).

19713814431 is a wasteful number, since it uses less digits than its factorization.

19713814431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314830.

The product of its digits is 72576, while the sum is 42.

The spelling of 19713814431 in words is "nineteen billion, seven hundred thirteen million, eight hundred fourteen thousand, four hundred thirty-one".