15328731097 has 2 divisors, whose sum is σ = 15328731098. Its totient is φ = 15328731096.

The previous prime is 15328731043. The next prime is 15328731127. The reversal of 15328731097 is 79013782351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14961203856 + 367527241 = 122316^2 + 19171^2 .

It is a cyclic number.

It is not a de Polignac number, because 15328731097 - 2¹¹ = 15328729049 is a prime.

It is not a weakly prime, because it can be changed into another prime (15328731007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7664365548 + 7664365549.

It is an arithmetic number, because the mean of its divisors is an integer number (7664365549).

Almost surely, 2^15328731097 is an apocalyptic number.

It is an amenable number.

15328731097 is a deficient number, since it is larger than the sum of its proper divisors (1).

15328731097 is an equidigital number, since it uses as much as digits as its factorization.

15328731097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 15328731097 in words is "fifteen billion, three hundred twenty-eight million, seven hundred thirty-one thousand, ninety-seven".