312123012200 has 48 divisors (see below), whose sum is σ = 725937331680. Its totient is φ = 124805965760.

The previous prime is 312123012199. The next prime is 312123012317. The reversal of 312123012200 is 2210321213.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311807 + ... + 849393.

It is an arithmetic number, because the mean of its divisors is an integer number (15123694410).

Almost surely, 2^312123012200 is an apocalyptic number.

It is an amenable number.

312123012200 is an abundant number, since it is smaller than the sum of its proper divisors (413814319480).

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

312123012200 is a wasteful number, since it uses less digits than its factorization.

312123012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540506 (or 540497 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 312123012200 its reverse (2210321213), we get a palindrome (314333333413).

The spelling of 312123012200 in words is "three hundred twelve billion, one hundred twenty-three million, twelve thousand, two hundred".