315886356197 has 2 divisors, whose sum is σ = 315886356198. Its totient is φ = 315886356196.

The previous prime is 315886356187. The next prime is 315886356251. The reversal of 315886356197 is 791653688513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169982219521 + 145904136676 = 412289^2 + 381974^2 .

It is an emirp because it is prime and its reverse (791653688513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315886356197 - 2¹⁶ = 315886290661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315886356157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157943178098 + 157943178099.

It is an arithmetic number, because the mean of its divisors is an integer number (157943178099).

Almost surely, 2^315886356197 is an apocalyptic number.

It is an amenable number.

315886356197 is a deficient number, since it is larger than the sum of its proper divisors (1).

315886356197 is an equidigital number, since it uses as much as digits as its factorization.

315886356197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32659200, while the sum is 62.

The spelling of 315886356197 in words is "three hundred fifteen billion, eight hundred eighty-six million, three hundred fifty-six thousand, one hundred ninety-seven".