31079538769 has 2 divisors, whose sum is σ = 31079538770. Its totient is φ = 31079538768.

The previous prime is 31079538719. The next prime is 31079538797. The reversal of 31079538769 is 96783597013.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17979591744 + 13099947025 = 134088^2 + 114455^2 .

It is a cyclic number.

It is not a de Polignac number, because 31079538769 - 2²³ = 31071150161 is a prime.

It is a super-2 number, since 2×31079538769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31079538719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15539769384 + 15539769385.

It is an arithmetic number, because the mean of its divisors is an integer number (15539769385).

Almost surely, 2^31079538769 is an apocalyptic number.

It is an amenable number.

31079538769 is a deficient number, since it is larger than the sum of its proper divisors (1).

31079538769 is an equidigital number, since it uses as much as digits as its factorization.

31079538769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8573040, while the sum is 58.

The spelling of 31079538769 in words is "thirty-one billion, seventy-nine million, five hundred thirty-eight thousand, seven hundred sixty-nine".