315900223 has 4 divisors (see below), whose sum is σ = 319899040. Its totient is φ = 311901408.

The previous prime is 315900209. The next prime is 315900253. The reversal of 315900223 is 322009513.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315900223 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 (315900253) 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, 1999290 + ... + 1999447.

It is an arithmetic number, because the mean of its divisors is an integer number (79974760).

Almost surely, 2^315900223 is an apocalyptic number.

315900223 is a deficient number, since it is larger than the sum of its proper divisors (3998817).

315900223 is an equidigital number, since it uses as much as digits as its factorization.

315900223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3998816.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 315900223 is about 17773.5821656750. The cubic root of 315900223 is about 681.0567644518.

Adding to 315900223 its reverse (322009513), we get a palindrome (637909736).

The spelling of 315900223 in words is "three hundred fifteen million, nine hundred thousand, two hundred twenty-three".