312512922 has 48 divisors (see below), whose sum is σ = 703772160. Its totient is φ = 100116000.

The previous prime is 312512899. The next prime is 312512923. The reversal of 312512922 is 229215213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (312512923) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 82404 + ... + 86112.

It is an arithmetic number, because the mean of its divisors is an integer number (14661920).

Almost surely, 2^312512922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312512922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351886080).

312512922 is an abundant number, since it is smaller than the sum of its proper divisors (391259238).

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

312512922 is a wasteful number, since it uses less digits than its factorization.

312512922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3899 (or 3896 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 312512922 is about 17678.0350152385. The cubic root of 312512922 is about 678.6137575410.

The spelling of 312512922 in words is "three hundred twelve million, five hundred twelve thousand, nine hundred twenty-two".