315653 has 4 divisors (see below), whose sum is σ = 339948. Its totient is φ = 291360.

The previous prime is 315643. The next prime is 315671. The reversal of 315653 is 356513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 356513 = 43 ⋅8291.

It can be written as a sum of positive squares in 2 ways, for example, as 187489 + 128164 = 433^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 315653 - 2⁶ = 315589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12128 + ... + 12153.

It is an arithmetic number, because the mean of its divisors is an integer number (84987).

2³¹⁵⁶⁵³ is an apocalyptic number.

It is an amenable number.

315653 is a deficient number, since it is larger than the sum of its proper divisors (24295).

315653 is a wasteful number, since it uses less digits than its factorization.

315653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24294.

The product of its digits is 1350, while the sum is 23.

The square root of 315653 is about 561.8300454764. The cubic root of 315653 is about 68.0879053447.

The spelling of 315653 in words is "three hundred fifteen thousand, six hundred fifty-three".