315157 has 4 divisors (see below), whose sum is σ = 318060. Its totient is φ = 312256.

The previous prime is 315127. The next prime is 315179. The reversal of 315157 is 751513.

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

It can be written as a sum of positive squares in 2 ways, for example, as 78961 + 236196 = 281^2 + 486^2 .

It is a cyclic number.

It is not a de Polignac number, because 315157 - 2¹¹ = 313109 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 (315127) 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, 1282 + ... + 1507.

It is an arithmetic number, because the mean of its divisors is an integer number (79515).

2³¹⁵¹⁵⁷ is an apocalyptic number.

It is an amenable number.

315157 is a deficient number, since it is larger than the sum of its proper divisors (2903).

315157 is a wasteful number, since it uses less digits than its factorization.

315157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902.

The product of its digits is 525, while the sum is 22.

The square root of 315157 is about 561.3884573092. The cubic root of 315157 is about 68.0522234350.

It can be divided in two parts, 315 and 157, that multiplied together give a triangular number (49455 = T₃₁₄).

The spelling of 315157 in words is "three hundred fifteen thousand, one hundred fifty-seven".