252404312 has 8 divisors (see below), whose sum is σ = 473258100. Its totient is φ = 126202152.

The previous prime is 252404311. The next prime is 252404329. The reversal of 252404312 is 213404252.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252404311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15775262 + ... + 15775277.

Almost surely, 2^252404312 is an apocalyptic number.

It is an amenable number.

252404312 is a deficient number, since it is larger than the sum of its proper divisors (220853788).

252404312 is a wasteful number, since it uses less digits than its factorization.

252404312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31550545 (or 31550541 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 252404312 is about 15887.2373935811. The cubic root of 252404312 is about 631.9735808536.

Adding to 252404312 its reverse (213404252), we get a palindrome (465808564).

The spelling of 252404312 in words is "two hundred fifty-two million, four hundred four thousand, three hundred twelve".