315492621 has 8 divisors (see below), whose sum is σ = 420749280. Its totient is φ = 210282192.

The previous prime is 315492571. The next prime is 315492631. The reversal of 315492621 is 126294513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 315492621 - 2⁶ = 315492557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315492631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10246 + ... + 27128.

It is an arithmetic number, because the mean of its divisors is an integer number (52593660).

Almost surely, 2^315492621 is an apocalyptic number.

It is an amenable number.

315492621 is a deficient number, since it is larger than the sum of its proper divisors (105256659).

315492621 is a wasteful number, since it uses less digits than its factorization.

315492621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23115.

The product of its digits is 12960, while the sum is 33.

The square root of 315492621 is about 17762.1119521300. Note that the first 3 decimals coincide. The cubic root of 315492621 is about 680.7637187797.

The spelling of 315492621 in words is "three hundred fifteen million, four hundred ninety-two thousand, six hundred twenty-one".