312402311134321 has 16 divisors (see below), whose sum is σ = 339726367471824. Its totient is φ = 286072765784064.

The previous prime is 312402311134289. The next prime is 312402311134481. The reversal of 312402311134321 is 123431113204213.

It can be written as a sum of positive squares in 8 ways, for example, as 30763262903296 + 281639048231025 = 5546464^2 + 16782105^2 .

It is a cyclic number.

It is not a de Polignac number, because 312402311134321 - 2⁵ = 312402311134289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312402411134321) 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, 23246241 + ... + 34134913.

It is an arithmetic number, because the mean of its divisors is an integer number (21232897966989).

Almost surely, 2^{312402311134321} is an apocalyptic number.

It is an amenable number.

312402311134321 is a deficient number, since it is larger than the sum of its proper divisors (27324056337503).

312402311134321 is a wasteful number, since it uses less digits than its factorization.

312402311134321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10934340.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 312402311134321 its reverse (123431113204213), we get a palindrome (435833424338534).

The spelling of 312402311134321 in words is "three hundred twelve trillion, four hundred two billion, three hundred eleven million, one hundred thirty-four thousand, three hundred twenty-one".