312689252 has 12 divisors (see below), whose sum is σ = 566075580. Its totient is φ = 150953376.

The previous prime is 312689231. The next prime is 312689263. The reversal of 312689252 is 252986213.

It can be written as a sum of positive squares in 2 ways, for example, as 223084096 + 89605156 = 14936^2 + 9466^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347683 + ... + 1347914.

It is an arithmetic number, because the mean of its divisors is an integer number (47172965).

Almost surely, 2^312689252 is an apocalyptic number.

It is an amenable number.

312689252 is a deficient number, since it is larger than the sum of its proper divisors (253386328).

312689252 is a wasteful number, since it uses less digits than its factorization.

312689252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695630 (or 2695628 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 312689252 is about 17683.0215743803. The cubic root of 312689252 is about 678.7413655610.

The spelling of 312689252 in words is "three hundred twelve million, six hundred eighty-nine thousand, two hundred fifty-two".