312303120212 has 12 divisors (see below), whose sum is σ = 552164795700. Its totient is φ = 154541750016.

The previous prime is 312303120091. The next prime is 312303120229. The reversal of 312303120212 is 212021303213.

It can be written as a sum of positive squares in 2 ways, for example, as 80840136976 + 231462983236 = 284324^2 + 481106^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402452087 + ... + 402452862.

It is an arithmetic number, because the mean of its divisors is an integer number (46013732975).

Almost surely, 2^312303120212 is an apocalyptic number.

It is an amenable number.

312303120212 is a deficient number, since it is larger than the sum of its proper divisors (239861675488).

312303120212 is a wasteful number, since it uses less digits than its factorization.

312303120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804905050 (or 804905048 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312303120212 its reverse (212021303213), we get a palindrome (524324423425).

The spelling of 312303120212 in words is "three hundred twelve billion, three hundred three million, one hundred twenty thousand, two hundred twelve".