315134321 has 8 divisors (see below), whose sum is σ = 334117224. Its totient is φ = 296200960.

The previous prime is 315134311. The next prime is 315134377. The reversal of 315134321 is 123431513.

It can be written as a sum of positive squares in 4 ways, for example, as 4000000 + 311134321 = 2000^2 + 17639^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 315134321 - 2²² = 310940017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (315134311) 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, 1151 + ... + 25131.

It is an arithmetic number, because the mean of its divisors is an integer number (41764653).

Almost surely, 2^315134321 is an apocalyptic number.

It is an amenable number.

315134321 is a deficient number, since it is larger than the sum of its proper divisors (18982903).

315134321 is a wasteful number, since it uses less digits than its factorization.

315134321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24771.

The product of its digits is 1080, while the sum is 23.

The square root of 315134321 is about 17752.0230114767. The cubic root of 315134321 is about 680.5059102813.

Adding to 315134321 its reverse (123431513), we get a palindrome (438565834).

The spelling of 315134321 in words is "three hundred fifteen million, one hundred thirty-four thousand, three hundred twenty-one".