312121142312 has 32 divisors (see below), whose sum is σ = 669005068800. Its totient is φ = 133731393984.

The previous prime is 312121142309. The next prime is 312121142401. The reversal of 312121142312 is 213241121213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507512 + ... + 939047.

It is an arithmetic number, because the mean of its divisors is an integer number (20906408400).

Almost surely, 2^312121142312 is an apocalyptic number.

It is an amenable number.

312121142312 is an abundant number, since it is smaller than the sum of its proper divisors (356883926488).

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

312121142312 is a wasteful number, since it uses less digits than its factorization.

312121142312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450425 (or 1450421 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

Adding to 312121142312 its reverse (213241121213), we get a palindrome (525362263525).

The spelling of 312121142312 in words is "three hundred twelve billion, one hundred twenty-one million, one hundred forty-two thousand, three hundred twelve".