31542139459 has 2 divisors, whose sum is σ = 31542139460. Its totient is φ = 31542139458.

The previous prime is 31542139399. The next prime is 31542139469. The reversal of 31542139459 is 95493124513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31542139459 - 2²⁷ = 31407921731 is a prime.

It is not a weakly prime, because it can be changed into another prime (31542139469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15771069729 + 15771069730.

It is an arithmetic number, because the mean of its divisors is an integer number (15771069730).

Almost surely, 2^31542139459 is an apocalyptic number.

31542139459 is a deficient number, since it is larger than the sum of its proper divisors (1).

31542139459 is an equidigital number, since it uses as much as digits as its factorization.

31542139459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The spelling of 31542139459 in words is "thirty-one billion, five hundred forty-two million, one hundred thirty-nine thousand, four hundred fifty-nine".