315901 has 4 divisors (see below), whose sum is σ = 319072. Its totient is φ = 312732.

The previous prime is 315899. The next prime is 315907. The reversal of 315901 is 109513.

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, and also an emirpimes, since its reverse is a distinct semiprime: 109513 = 97 ⋅1129.

It is a cyclic number.

It is not a de Polignac number, because 315901 - 2¹ = 315899 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 (315907) 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, 1431 + ... + 1636.

It is an arithmetic number, because the mean of its divisors is an integer number (79768).

2³¹⁵⁹⁰¹ is an apocalyptic number.

315901 is the 325-th hex number.

It is an amenable number.

315901 is a deficient number, since it is larger than the sum of its proper divisors (3171).

315901 is a wasteful number, since it uses less digits than its factorization.

315901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 315901 is about 562.0507094560. The cubic root of 315901 is about 68.1057322836.

The spelling of 315901 in words is "three hundred fifteen thousand, nine hundred one".