315897430491 has 16 divisors (see below), whose sum is σ = 468008486400. Its totient is φ = 210592755144.

The previous prime is 315897430463. The next prime is 315897430501. The reversal of 315897430491 is 194034798513.

315897430491 is a `hidden beast` number, since 3 + 1 + 5 + 89 + 74 + 3 + 0 + 491 = 666.

It is not a de Polignac number, because 315897430491 - 2⁶ = 315897430427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (315897430391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1070610 + ... + 1333416.

It is an arithmetic number, because the mean of its divisors is an integer number (29250530400).

Almost surely, 2^315897430491 is an apocalyptic number.

315897430491 is a deficient number, since it is larger than the sum of its proper divisors (152111055909).

315897430491 is a wasteful number, since it uses less digits than its factorization.

315897430491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307335 (or 307329 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 315897430491 in words is "three hundred fifteen billion, eight hundred ninety-seven million, four hundred thirty thousand, four hundred ninety-one".