31045279739 has 2 divisors, whose sum is σ = 31045279740. Its totient is φ = 31045279738.

The previous prime is 31045279721. The next prime is 31045279753. The reversal of 31045279739 is 93797254013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31045279739 - 2⁸ = 31045279483 is a prime.

It is not a weakly prime, because it can be changed into another prime (31045279789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15522639869 + 15522639870.

It is an arithmetic number, because the mean of its divisors is an integer number (15522639870).

Almost surely, 2^31045279739 is an apocalyptic number.

31045279739 is a deficient number, since it is larger than the sum of its proper divisors (1).

31045279739 is an equidigital number, since it uses as much as digits as its factorization.

31045279739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 50.

The spelling of 31045279739 in words is "thirty-one billion, forty-five million, two hundred seventy-nine thousand, seven hundred thirty-nine".