31949458279 has 2 divisors, whose sum is σ = 31949458280. Its totient is φ = 31949458278.

The previous prime is 31949458273. The next prime is 31949458319. The reversal of 31949458279 is 97285494913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31949458279 - 2³³ = 23359523687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31949458273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15974729139 + 15974729140.

It is an arithmetic number, because the mean of its divisors is an integer number (15974729140).

Almost surely, 2^31949458279 is an apocalyptic number.

31949458279 is a deficient number, since it is larger than the sum of its proper divisors (1).

31949458279 is an equidigital number, since it uses as much as digits as its factorization.

31949458279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 61.

It can be divided in two parts, 319494 and 58279, that added together give a palindrome (377773).

The spelling of 31949458279 in words is "thirty-one billion, nine hundred forty-nine million, four hundred fifty-eight thousand, two hundred seventy-nine".