315257234639 has 4 divisors (see below), whose sum is σ = 321964835424. Its totient is φ = 308549633856.

The previous prime is 315257234629. The next prime is 315257234641. The reversal of 315257234639 is 936432752513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936432752513 = 3637 ⋅257473949.

It is a cyclic number.

It is not a de Polignac number, because 315257234639 - 2³⁶ = 246537757903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315257234609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353800322 + ... + 3353800415.

It is an arithmetic number, because the mean of its divisors is an integer number (80491208856).

Almost surely, 2^315257234639 is an apocalyptic number.

315257234639 is a deficient number, since it is larger than the sum of its proper divisors (6707600785).

315257234639 is an equidigital number, since it uses as much as digits as its factorization.

315257234639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6707600784.

The product of its digits is 4082400, while the sum is 50.

The spelling of 315257234639 in words is "three hundred fifteen billion, two hundred fifty-seven million, two hundred thirty-four thousand, six hundred thirty-nine".