315724069 has 4 divisors (see below), whose sum is σ = 317140096. Its totient is φ = 314308044.

The previous prime is 315724063. The next prime is 315724109. The reversal of 315724069 is 960427513.

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.

It is a cyclic number.

It is not a de Polignac number, because 315724069 - 2³ = 315724061 is a prime.

It is a super-2 number, since 2×315724069² = 199363375491833522, 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 (315724061) 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, 707679 + ... + 708124.

It is an arithmetic number, because the mean of its divisors is an integer number (79285024).

Almost surely, 2^315724069 is an apocalyptic number.

It is an amenable number.

315724069 is a deficient number, since it is larger than the sum of its proper divisors (1416027).

315724069 is a wasteful number, since it uses less digits than its factorization.

315724069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416026.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 315724069 is about 17768.6259738900. The cubic root of 315724069 is about 680.9301493890.

The spelling of 315724069 in words is "three hundred fifteen million, seven hundred twenty-four thousand, sixty-nine".