313444134442021 has 8 divisors (see below), whose sum is σ = 344965065099264. Its totient is φ = 282427538675520.

The previous prime is 313444134441941. The next prime is 313444134442037. The reversal of 313444134442021 is 120244431444313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313444134442021 is a prime.

It is a super-2 number, since 2×313444134442021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313444134445021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126083721381 + ... + 126083723866.

It is an arithmetic number, because the mean of its divisors is an integer number (43120633137408).

Almost surely, 2^{313444134442021} is an apocalyptic number.

It is an amenable number.

313444134442021 is a deficient number, since it is larger than the sum of its proper divisors (31520930657243).

313444134442021 is a wasteful number, since it uses less digits than its factorization.

313444134442021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252167445371.

The product of its (nonzero) digits is 442368, while the sum is 40.

Adding to 313444134442021 its reverse (120244431444313), we get a palindrome (433688565886334).

The spelling of 313444134442021 in words is "three hundred thirteen trillion, four hundred forty-four billion, one hundred thirty-four million, four hundred forty-two thousand, twenty-one".