312122012 has 72 divisors (see below), whose sum is σ = 606383232. Its totient is φ = 140313600.

The previous prime is 312122009. The next prime is 312122051. The reversal of 312122012 is 210221213.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4275608 + ... + 4275680.

Almost surely, 2^312122012 is an apocalyptic number.

It is an amenable number.

312122012 is a deficient number, since it is larger than the sum of its proper divisors (294261220).

312122012 is a wasteful number, since it uses less digits than its factorization.

312122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 312122012 is about 17666.9751796962. The cubic root of 312122012 is about 678.3306891510.

Adding to 312122012 its reverse (210221213), we get a palindrome (522343225).

The spelling of 312122012 in words is "three hundred twelve million, one hundred twenty-two thousand, twelve".