16719431223731 has 2 divisors, whose sum is σ = 16719431223732. Its totient is φ = 16719431223730.

The previous prime is 16719431223709. The next prime is 16719431223749. The reversal of 16719431223731 is 13732213491761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16719431223731 - 2²² = 16719427029427 is a prime.

It is a super-2 number, since 2×16719431223731² (a number of 27 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 16719431223731.

It is not a weakly prime, because it can be changed into another prime (16719431223701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8359715611865 + 8359715611866.

It is an arithmetic number, because the mean of its divisors is an integer number (8359715611866).

Almost surely, 2^{16719431223731} is an apocalyptic number.

16719431223731 is a deficient number, since it is larger than the sum of its proper divisors (1).

16719431223731 is an equidigital number, since it uses as much as digits as its factorization.

16719431223731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 50.

The spelling of 16719431223731 in words is "sixteen trillion, seven hundred nineteen billion, four hundred thirty-one million, two hundred twenty-three thousand, seven hundred thirty-one".