313043342422121 has 4 divisors (see below), whose sum is σ = 320323420152912. Its totient is φ = 305763264691332.

The previous prime is 313043342422117. The next prime is 313043342422127. The reversal of 313043342422121 is 121224243340313.

It is a happy number.

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 not a de Polignac number, because 313043342422121 - 2² = 313043342422117 is a prime.

It is a super-2 number, since 2×313043342422121² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313043342422127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3640038865331 + ... + 3640038865416.

It is an arithmetic number, because the mean of its divisors is an integer number (80080855038228).

Almost surely, 2^{313043342422121} is an apocalyptic number.

It is an amenable number.

313043342422121 is a deficient number, since it is larger than the sum of its proper divisors (7280077730791).

313043342422121 is an equidigital number, since it uses as much as digits as its factorization.

313043342422121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7280077730790.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 313043342422121 its reverse (121224243340313), we get a palindrome (434267585762434).

The spelling of 313043342422121 in words is "three hundred thirteen trillion, forty-three billion, three hundred forty-two million, four hundred twenty-two thousand, one hundred twenty-one".