312201000321 has 16 divisors (see below), whose sum is σ = 475751937024. Its totient is φ = 178394166864.

The previous prime is 312201000233. The next prime is 312201000337. The reversal of 312201000321 is 123000102213.

It is not a de Polignac number, because 312201000321 - 2¹⁸ = 312200738177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312201000321.

It is not an unprimeable number, because it can be changed into a prime (312201000821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367020 + ... + 871266.

It is an arithmetic number, because the mean of its divisors is an integer number (29734496064).

Almost surely, 2^312201000321 is an apocalyptic number.

It is an amenable number.

312201000321 is a deficient number, since it is larger than the sum of its proper divisors (163550936703).

312201000321 is a wasteful number, since it uses less digits than its factorization.

312201000321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533740.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 312201000321 its reverse (123000102213), we get a palindrome (435201102534).

The spelling of 312201000321 in words is "three hundred twelve billion, two hundred one million, three hundred twenty-one", and thus it is an aban number.