312626 has 12 divisors (see below), whose sum is σ = 496062. Its totient is φ = 147744.

The previous prime is 312623. The next prime is 312643. The reversal of 312626 is 626213.

It can be written as a sum of positive squares in only one way, i.e., 303601 + 9025 = 551^2 + 95^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312598 and 312607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 506 + ... + 938.

2³¹²⁶²⁶ is an apocalyptic number.

312626 is a deficient number, since it is larger than the sum of its proper divisors (183436).

312626 is a wasteful number, since it uses less digits than its factorization.

312626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 454 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 312626 is about 559.1296808434. The cubic root of 312626 is about 67.8695596326.

Adding to 312626 its reverse (626213), we get a palindrome (938839).

It can be divided in two parts, 31 and 2626, that multiplied together give a triangular number (81406 = T₄₀₃).

The spelling of 312626 in words is "three hundred twelve thousand, six hundred twenty-six".