312328772 has 24 divisors (see below), whose sum is σ = 635248320. Its totient is φ = 131585760.

The previous prime is 312328763. The next prime is 312328781. The reversal of 312328772 is 277823213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (312328763) and next prime (312328781).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92879 + ... + 96182.

It is an arithmetic number, because the mean of its divisors is an integer number (26468680).

Almost surely, 2^312328772 is an apocalyptic number.

It is an amenable number.

312328772 is an abundant number, since it is smaller than the sum of its proper divisors (322919548).

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

312328772 is a wasteful number, since it uses less digits than its factorization.

312328772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189131 (or 189129 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 312328772 is about 17672.8258068708. The cubic root of 312328772 is about 678.4804390247.

It can be divided in two parts, 31232 and 8772, that added together give a palindrome (40004).

The spelling of 312328772 in words is "three hundred twelve million, three hundred twenty-eight thousand, seven hundred seventy-two".