13120140431 has 2 divisors, whose sum is σ = 13120140432. Its totient is φ = 13120140430.

The previous prime is 13120140427. The next prime is 13120140437. The reversal of 13120140431 is 13404102131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13120140431 - 2² = 13120140427 is a prime.

It is a super-2 number, since 2×13120140431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13120140437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560070215 + 6560070216.

It is an arithmetic number, because the mean of its divisors is an integer number (6560070216).

Almost surely, 2^13120140431 is an apocalyptic number.

13120140431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13120140431 is an equidigital number, since it uses as much as digits as its factorization.

13120140431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13120140431 its reverse (13404102131), we get a palindrome (26524242562).

The spelling of 13120140431 in words is "thirteen billion, one hundred twenty million, one hundred forty thousand, four hundred thirty-one".