312521123042420 has 48 divisors (see below), whose sum is σ = 663943185873408. Its totient is φ = 123554961792000.

The previous prime is 312521123042417. The next prime is 312521123042449. The reversal of 312521123042420 is 24240321125213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105795632 + ... + 108709511.

It is an arithmetic number, because the mean of its divisors is an integer number (13832149705696).

Almost surely, 2^{312521123042420} is an apocalyptic number.

It is an amenable number.

312521123042420 is an abundant number, since it is smaller than the sum of its proper divisors (351422062830988).

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

312521123042420 is a wasteful number, since it uses less digits than its factorization.

312521123042420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214506000 (or 214505998 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 312521123042420 its reverse (24240321125213), we get a palindrome (336761444167633).

The spelling of 312521123042420 in words is "three hundred twelve trillion, five hundred twenty-one billion, one hundred twenty-three million, forty-two thousand, four hundred twenty".