312209600402 has 18 divisors (see below), whose sum is σ = 544783546503. Its totient is φ = 133801743852.

The previous prime is 312209600401. The next prime is 312209600411. The reversal of 312209600402 is 204006902213.

It can be written as a sum of positive squares in only one way, i.e., 156104800201 + 156104800201 = 395101^2 + 395101^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=395101.

It is not an unprimeable number, because it can be changed into a prime (312209600401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5503193 + ... + 5559635.

Almost surely, 2^312209600402 is an apocalyptic number.

312209600402 is a deficient number, since it is larger than the sum of its proper divisors (232573946101).

312209600402 is an frugal number, since it uses more digits than its factorization.

312209600402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112902 (or 56452 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 312209600402 in words is "three hundred twelve billion, two hundred nine million, six hundred thousand, four hundred two".