312255330 has 32 divisors (see below), whose sum is σ = 763556544. Its totient is φ = 81696576.

The previous prime is 312255311. The next prime is 312255331. The reversal of 312255330 is 33552213.

It is a happy number.

It is a super-2 number, since 2×312255330² = 195006782226817800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312255330.

It is not an unprimeable number, because it can be changed into a prime (312255331) 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 in 15 ways as a sum of consecutive naturals, for example, 96604 + ... + 99783.

It is an arithmetic number, because the mean of its divisors is an integer number (23861142).

Almost surely, 2^312255330 is an apocalyptic number.

312255330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

312255330 is an abundant number, since it is smaller than the sum of its proper divisors (451301214).

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

312255330 is a wasteful number, since it uses less digits than its factorization.

312255330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196450.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 312255330 is about 17670.7478619327. The cubic root of 312255330 is about 678.4272548258.

The spelling of 312255330 in words is "three hundred twelve million, two hundred fifty-five thousand, three hundred thirty".