31368415489 has 2 divisors, whose sum is σ = 31368415490. Its totient is φ = 31368415488.

The previous prime is 31368415483. The next prime is 31368415531. The reversal of 31368415489 is 98451486313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29724518464 + 1643897025 = 172408^2 + 40545^2 .

It is a cyclic number.

It is not a de Polignac number, because 31368415489 - 2⁵ = 31368415457 is a prime.

It is not a weakly prime, because it can be changed into another prime (31368415483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15684207744 + 15684207745.

It is an arithmetic number, because the mean of its divisors is an integer number (15684207745).

Almost surely, 2^31368415489 is an apocalyptic number.

It is an amenable number.

31368415489 is a deficient number, since it is larger than the sum of its proper divisors (1).

31368415489 is an equidigital number, since it uses as much as digits as its factorization.

31368415489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 52.

The spelling of 31368415489 in words is "thirty-one billion, three hundred sixty-eight million, four hundred fifteen thousand, four hundred eighty-nine".