312403313000021 has 8 divisors (see below), whose sum is σ = 312667616394840. Its totient is φ = 312139096743168.

The previous prime is 312403312999993. The next prime is 312403313000029. The reversal of 312403313000021 is 120000313304213.

It can be written as a sum of positive squares in 4 ways, for example, as 163275009523921 + 149128303476100 = 12777911^2 + 12211810^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312403313000021 - 2⁶ = 312403312999957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312403313000029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14610146 + ... + 28952771.

It is an arithmetic number, because the mean of its divisors is an integer number (39083452049355).

Almost surely, 2^{312403313000021} is an apocalyptic number.

It is an amenable number.

312403313000021 is a deficient number, since it is larger than the sum of its proper divisors (264303394819).

312403313000021 is a wasteful number, since it uses less digits than its factorization.

312403313000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43568983.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 312403313000021 its reverse (120000313304213), we get a palindrome (432403626304234).

The spelling of 312403313000021 in words is "three hundred twelve trillion, four hundred three billion, three hundred thirteen million, twenty-one", and thus it is an aban number.