312131324404001 has 4 divisors (see below), whose sum is σ = 312132978698004. Its totient is φ = 312129670110000.

The previous prime is 312131324403907. The next prime is 312131324404007. The reversal of 312131324404001 is 100404423131213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178227199230976 + 133904125173025 = 13350176^2 + 11571695^2 .

It is a cyclic number.

It is not a de Polignac number, because 312131324404001 - 2⁴² = 307733277892897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312131324404007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826863950 + ... + 827241351.

It is an arithmetic number, because the mean of its divisors is an integer number (78033244674501).

Almost surely, 2^{312131324404001} is an apocalyptic number.

It is an amenable number.

312131324404001 is a deficient number, since it is larger than the sum of its proper divisors (1654294003).

312131324404001 is a wasteful number, since it uses less digits than its factorization.

312131324404001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654294002.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 312131324404001 its reverse (100404423131213), we get a palindrome (412535747535214).

The spelling of 312131324404001 in words is "three hundred twelve trillion, one hundred thirty-one billion, three hundred twenty-four million, four hundred four thousand, one".