31457141519 has 2 divisors, whose sum is σ = 31457141520. Its totient is φ = 31457141518.

The previous prime is 31457141509. The next prime is 31457141543. The reversal of 31457141519 is 91514175413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31457141519 - 2¹² = 31457137423 is a prime.

It is a super-2 number, since 2×31457141519² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31457141509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15728570759 + 15728570760.

It is an arithmetic number, because the mean of its divisors is an integer number (15728570760).

Almost surely, 2^31457141519 is an apocalyptic number.

31457141519 is a deficient number, since it is larger than the sum of its proper divisors (1).

31457141519 is an equidigital number, since it uses as much as digits as its factorization.

31457141519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 41.

The spelling of 31457141519 in words is "thirty-one billion, four hundred fifty-seven million, one hundred forty-one thousand, five hundred nineteen".