312322202201321 has 16 divisors (see below), whose sum is σ = 344886189569040. Its totient is φ = 281061750251520.

The previous prime is 312322202201117. The next prime is 312322202201381. The reversal of 312322202201321 is 123102202223213.

It can be written as a sum of positive squares in 8 ways, for example, as 117539314818025 + 194782887383296 = 10841555^2 + 13956464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312322202201321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312322202201381) 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, 1742604776 + ... + 1742783993.

It is an arithmetic number, because the mean of its divisors is an integer number (21555386848065).

Almost surely, 2^{312322202201321} is an apocalyptic number.

It is an amenable number.

312322202201321 is a deficient number, since it is larger than the sum of its proper divisors (32563987367719).

312322202201321 is a wasteful number, since it uses less digits than its factorization.

312322202201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485388956.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 312322202201321 its reverse (123102202223213), we get a palindrome (435424404424534).

The spelling of 312322202201321 in words is "three hundred twelve trillion, three hundred twenty-two billion, two hundred two million, two hundred one thousand, three hundred twenty-one".