13418431931 has 2 divisors, whose sum is σ = 13418431932. Its totient is φ = 13418431930.

The previous prime is 13418431919. The next prime is 13418431967. The reversal of 13418431931 is 13913481431.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13418431931 - 2⁶ = 13418431867 is a prime.

It is a super-2 number, since 2×13418431931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13418436931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6709215965 + 6709215966.

It is an arithmetic number, because the mean of its divisors is an integer number (6709215966).

Almost surely, 2^13418431931 is an apocalyptic number.

13418431931 is a deficient number, since it is larger than the sum of its proper divisors (1).

13418431931 is an equidigital number, since it uses as much as digits as its factorization.

13418431931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The spelling of 13418431931 in words is "thirteen billion, four hundred eighteen million, four hundred thirty-one thousand, nine hundred thirty-one".