315393390 has 96 divisors (see below), whose sum is σ = 903782880. Its totient is φ = 75817728.

The previous prime is 315393311. The next prime is 315393437. The reversal of 315393390 is 93393513.

315393390 is a `hidden beast` number, since 3 + 1 + 539 + 33 + 90 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47176 + ... + 53444.

It is an arithmetic number, because the mean of its divisors is an integer number (9414405).

Almost surely, 2^315393390 is an apocalyptic number.

315393390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 315393390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451891440).

315393390 is an abundant number, since it is smaller than the sum of its proper divisors (588389490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315393390 is a wasteful number, since it uses less digits than its factorization.

315393390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6338 (or 6335 counting only the distinct ones).

The product of its (nonzero) digits is 32805, while the sum is 36.

The square root of 315393390 is about 17759.3183990828. The cubic root of 315393390 is about 680.6923384010.

The spelling of 315393390 in words is "three hundred fifteen million, three hundred ninety-three thousand, three hundred ninety".