31593451679 has 2 divisors, whose sum is σ = 31593451680. Its totient is φ = 31593451678.

The previous prime is 31593451649. The next prime is 31593451699. The reversal of 31593451679 is 97615439513.

It is a strong prime.

It is an emirp because it is prime and its reverse (97615439513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31593451679 - 2²⁰ = 31592403103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31593451679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31593451609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15796725839 + 15796725840.

It is an arithmetic number, because the mean of its divisors is an integer number (15796725840).

Almost surely, 2^31593451679 is an apocalyptic number.

31593451679 is a deficient number, since it is larger than the sum of its proper divisors (1).

31593451679 is an equidigital number, since it uses as much as digits as its factorization.

31593451679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3061800, while the sum is 53.

The spelling of 31593451679 in words is "thirty-one billion, five hundred ninety-three million, four hundred fifty-one thousand, six hundred seventy-nine".