315137469 has 4 divisors (see below), whose sum is σ = 420183296. Its totient is φ = 210091644.

The previous prime is 315137441. The next prime is 315137489. The reversal of 315137469 is 964731513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 964731513 = 3 ⋅321577171.

It is not a de Polignac number, because 315137469 - 2¹⁵ = 315104701 is a prime.

It is a super-2 number, since 2×315137469² = 198623248735451922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315137429) 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, 52522909 + ... + 52522914.

It is an arithmetic number, because the mean of its divisors is an integer number (105045824).

Almost surely, 2^315137469 is an apocalyptic number.

It is an amenable number.

315137469 is a deficient number, since it is larger than the sum of its proper divisors (105045827).

315137469 is a wasteful number, since it uses less digits than its factorization.

315137469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105045826.

The product of its digits is 68040, while the sum is 39.

The square root of 315137469 is about 17752.1116772062. Note that the first 3 decimals coincide. The cubic root of 315137469 is about 680.5081762204.

The spelling of 315137469 in words is "three hundred fifteen million, one hundred thirty-seven thousand, four hundred sixty-nine".