312724 has 12 divisors (see below), whose sum is σ = 562324. Its totient is φ = 152064.

The previous prime is 312709. The next prime is 312727. The reversal of 312724 is 427213.

It can be written as a sum of positive squares in 2 ways, for example, as 110224 + 202500 = 332^2 + 450^2 .

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312727) 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, 909 + ... + 1204.

2³¹²⁷²⁴ is an apocalyptic number.

It is an amenable number.

312724 is a deficient number, since it is larger than the sum of its proper divisors (249600).

312724 is a wasteful number, since it uses less digits than its factorization.

312724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154 (or 2152 counting only the distinct ones).

The product of its digits is 336, while the sum is 19.

The square root of 312724 is about 559.2173101756. The cubic root of 312724 is about 67.8766506636.

Adding to 312724 its reverse (427213), we get a palindrome (739937).

The spelling of 312724 in words is "three hundred twelve thousand, seven hundred twenty-four", and thus it is an iban number.