312623 has 2 divisors, whose sum is σ = 312624. Its totient is φ = 312622.

The previous prime is 312619. The next prime is 312643. The reversal of 312623 is 326213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312623 - 2² = 312619 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156311 + 156312.

It is an arithmetic number, because the mean of its divisors is an integer number (156312).

2³¹²⁶²³ is an apocalyptic number.

312623 is a deficient number, since it is larger than the sum of its proper divisors (1).

312623 is an equidigital number, since it uses as much as digits as its factorization.

312623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 17.

The square root of 312623 is about 559.1269980961. The cubic root of 312623 is about 67.8693425368.

Adding to 312623 its reverse (326213), we get a palindrome (638836).

It can be divided in two parts, 312 and 623, that multiplied together give a triangular number (194376 = T₆₂₃).

The spelling of 312623 in words is "three hundred twelve thousand, six hundred twenty-three".