31041279769 has 2 divisors, whose sum is σ = 31041279770. Its totient is φ = 31041279768.

The previous prime is 31041279751. The next prime is 31041279791. The reversal of 31041279769 is 96797214013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27097439769 + 3943840000 = 164613^2 + 62800^2 .

It is an emirp because it is prime and its reverse (96797214013) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31041279769 is a prime.

It is a super-2 number, since 2×31041279769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31041274769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15520639884 + 15520639885.

It is an arithmetic number, because the mean of its divisors is an integer number (15520639885).

Almost surely, 2^31041279769 is an apocalyptic number.

It is an amenable number.

31041279769 is a deficient number, since it is larger than the sum of its proper divisors (1).

31041279769 is an equidigital number, since it uses as much as digits as its factorization.

31041279769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 49.

The spelling of 31041279769 in words is "thirty-one billion, forty-one million, two hundred seventy-nine thousand, seven hundred sixty-nine".