312212131420 has 24 divisors (see below), whose sum is σ = 749309115744. Its totient is φ = 107044159296.

The previous prime is 312212131369. The next prime is 312212131433. The reversal of 312212131420 is 24131212213.

It is a junction number, because it is equal to n+sod(n) for n = 312212131391 and 312212131400.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1115043187 + ... + 1115043466.

It is an arithmetic number, because the mean of its divisors is an integer number (31221213156).

Almost surely, 2^312212131420 is an apocalyptic number.

It is an amenable number.

312212131420 is an abundant number, since it is smaller than the sum of its proper divisors (437096984324).

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

312212131420 is a wasteful number, since it uses less digits than its factorization.

312212131420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230086669 (or 2230086667 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 312212131420 its reverse (24131212213), we get a palindrome (336343343633).

The spelling of 312212131420 in words is "three hundred twelve billion, two hundred twelve million, one hundred thirty-one thousand, four hundred twenty".