312400321013504 has 72 divisors (see below), whose sum is σ = 627281993677248. Its totient is φ = 155273639178240.

The previous prime is 312400321013483. The next prime is 312400321013591. The reversal of 312400321013504 is 405310123004213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112006574 + ... + 114761810.

It is an arithmetic number, because the mean of its divisors is an integer number (8712249912184).

Almost surely, 2^{312400321013504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312400321013504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313640996838624).

312400321013504 is an abundant number, since it is smaller than the sum of its proper divisors (314881672663744).

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

312400321013504 is a wasteful number, since it uses less digits than its factorization.

312400321013504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757881 (or 2757867 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 312400321013504 its reverse (405310123004213), we get a palindrome (717710444017717).

The spelling of 312400321013504 in words is "three hundred twelve trillion, four hundred billion, three hundred twenty-one million, thirteen thousand, five hundred four".