7313831897 has 2 divisors, whose sum is σ = 7313831898. Its totient is φ = 7313831896.

The previous prime is 7313831887. The next prime is 7313831909. The reversal of 7313831897 is 7981383137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7078025161 + 235806736 = 84131^2 + 15356^2 .

It is a cyclic number.

It is not a de Polignac number, because 7313831897 - 2⁴ = 7313831881 is a prime.

It is not a weakly prime, because it can be changed into another prime (7313831807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3656915948 + 3656915949.

It is an arithmetic number, because the mean of its divisors is an integer number (3656915949).

Almost surely, 2^7313831897 is an apocalyptic number.

It is an amenable number.

7313831897 is a deficient number, since it is larger than the sum of its proper divisors (1).

7313831897 is an equidigital number, since it uses as much as digits as its factorization.

7313831897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 50.

The square root of 7313831897 is about 85520.9442008214. The cubic root of 7313831897 is about 1941.1018554651.

The spelling of 7313831897 in words is "seven billion, three hundred thirteen million, eight hundred thirty-one thousand, eight hundred ninety-seven".