312222564 has 36 divisors (see below), whose sum is σ = 789785724. Its totient is φ = 104000832.

The previous prime is 312222557. The next prime is 312222587. The reversal of 312222564 is 465222213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 165328164 + 146894400 = 12858^2 + 12120^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78594 + ... + 82470.

Almost surely, 2^312222564 is an apocalyptic number.

It is an amenable number.

312222564 is an abundant number, since it is smaller than the sum of its proper divisors (477563160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312222564 is a wasteful number, since it uses less digits than its factorization.

312222564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124 (or 6119 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 312222564 is about 17669.8207121634. The cubic root of 312222564 is about 678.4035241126.

Adding to 312222564 its reverse (465222213), we get a palindrome (777444777).

It can be divided in two parts, 3122225 and 64, that added together give a square (3122289 = 1767²).

The spelling of 312222564 in words is "three hundred twelve million, two hundred twenty-two thousand, five hundred sixty-four".