315629 has 4 divisors (see below), whose sum is σ = 329376. Its totient is φ = 301884.

The previous prime is 315617. The next prime is 315631. The reversal of 315629 is 926513.

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.

It is a cyclic number.

It is not a de Polignac number, because 315629 - 2⁴ = 315613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 315598 and 315607.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315629.

It is not an unprimeable number, because it can be changed into a prime (315529) 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, 6839 + ... + 6884.

It is an arithmetic number, because the mean of its divisors is an integer number (82344).

2³¹⁵⁶²⁹ is an apocalyptic number.

It is an amenable number.

315629 is a deficient number, since it is larger than the sum of its proper divisors (13747).

315629 is a wasteful number, since it uses less digits than its factorization.

315629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13746.

The product of its digits is 1620, while the sum is 26.

The square root of 315629 is about 561.8086862981. The cubic root of 315629 is about 68.0861796616.

It can be divided in two parts, 315 and 629, that multiplied together give a triangular number (198135 = T₆₂₉).

The spelling of 315629 in words is "three hundred fifteen thousand, six hundred twenty-nine".