312131340200401 has 4 divisors (see below), whose sum is σ = 312446306235904. Its totient is φ = 311816374164900.

The previous prime is 312131340200287. The next prime is 312131340200419. The reversal of 312131340200401 is 104002043131213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312131340200401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312131340210401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157483016265 + ... + 157483018246.

It is an arithmetic number, because the mean of its divisors is an integer number (78111576558976).

Almost surely, 2^{312131340200401} is an apocalyptic number.

It is an amenable number.

312131340200401 is a deficient number, since it is larger than the sum of its proper divisors (314966035503).

312131340200401 is an equidigital number, since it uses as much as digits as its factorization.

312131340200401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314966035502.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 312131340200401 its reverse (104002043131213), we get a palindrome (416133383331614).

The spelling of 312131340200401 in words is "three hundred twelve trillion, one hundred thirty-one billion, three hundred forty million, two hundred thousand, four hundred one".