312213032 has 32 divisors (see below), whose sum is σ = 608670720. Its totient is φ = 150015360.

The previous prime is 312213029. The next prime is 312213047. The reversal of 312213032 is 230312213.

It is a self number, because there is not a number n which added to its sum of digits gives 312213032.

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, 14873 + ... + 29079.

It is an arithmetic number, because the mean of its divisors is an integer number (19020960).

Almost surely, 2^312213032 is an apocalyptic number.

It is an amenable number.

312213032 is a deficient number, since it is larger than the sum of its proper divisors (296457688).

312213032 is a wasteful number, since it uses less digits than its factorization.

312213032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14321 (or 14317 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 312213032 is about 17669.5509846742. The cubic root of 312213032 is about 678.3966202680.

Adding to 312213032 its reverse (230312213), we get a palindrome (542525245).

The spelling of 312213032 in words is "three hundred twelve million, two hundred thirteen thousand, thirty-two".