313044422131421 has 4 divisors (see below), whose sum is σ = 313137562397244. Its totient is φ = 312951281865600.

The previous prime is 313044422131349. The next prime is 313044422131423. The reversal of 313044422131421 is 124131224440313.

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 127292436936025 + 185751985195396 = 11282395^2 + 13629086^2 .

It is a cyclic number.

It is not a de Polignac number, because 313044422131421 - 2²² = 313044417937117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313044422131423) 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, 46570127870 + ... + 46570134591.

It is an arithmetic number, because the mean of its divisors is an integer number (78284390599311).

Almost surely, 2^{313044422131421} is an apocalyptic number.

It is an amenable number.

313044422131421 is a deficient number, since it is larger than the sum of its proper divisors (93140265823).

313044422131421 is an equidigital number, since it uses as much as digits as its factorization.

313044422131421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93140265822.

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 313044422131421 its reverse (124131224440313), we get a palindrome (437175646571734).

The spelling of 313044422131421 in words is "three hundred thirteen trillion, forty-four billion, four hundred twenty-two million, one hundred thirty-one thousand, four hundred twenty-one".