312321232 has 20 divisors (see below), whose sum is σ = 631432800. Its totient is φ = 149370848.

The previous prime is 312321223. The next prime is 312321277. The reversal of 312321232 is 232123213.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 423982 + ... + 424717.

It is an arithmetic number, because the mean of its divisors is an integer number (31571640).

Almost surely, 2^312321232 is an apocalyptic number.

It is an amenable number.

312321232 is an abundant number, since it is smaller than the sum of its proper divisors (319111568).

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

312321232 is a wasteful number, since it uses less digits than its factorization.

312321232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848730 (or 848724 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 312321232 is about 17672.6124837275. The cubic root of 312321232 is about 678.4749791972.

Adding to 312321232 its reverse (232123213), we get a palindrome (544444445).

The spelling of 312321232 in words is "three hundred twelve million, three hundred twenty-one thousand, two hundred thirty-two".