20131937719 has 2 divisors, whose sum is σ = 20131937720. Its totient is φ = 20131937718.

The previous prime is 20131937717. The next prime is 20131937729. The reversal of 20131937719 is 91773913102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20131937719 - 2¹ = 20131937717 is a prime.

It is a super-2 number, since 2×20131937719² (a number of 21 digits) contains 22 as substring.

Together with 20131937717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20131937713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065968859 + 10065968860.

It is an arithmetic number, because the mean of its divisors is an integer number (10065968860).

Almost surely, 2^20131937719 is an apocalyptic number.

20131937719 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131937719 is an equidigital number, since it uses as much as digits as its factorization.

20131937719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 43.

The spelling of 20131937719 in words is "twenty billion, one hundred thirty-one million, nine hundred thirty-seven thousand, seven hundred nineteen".