313404121 has 4 divisors (see below), whose sum is σ = 313441744. Its totient is φ = 313366500.

The previous prime is 313404109. The next prime is 313404137. The reversal of 313404121 is 121404313.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 313404121 - 2²¹ = 311306969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313404151) 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, 135 + ... + 25036.

It is an arithmetic number, because the mean of its divisors is an integer number (78360436).

Almost surely, 2^313404121 is an apocalyptic number.

It is an amenable number.

313404121 is a deficient number, since it is larger than the sum of its proper divisors (37623).

313404121 is a wasteful number, since it uses less digits than its factorization.

313404121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37622.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 313404121 is about 17703.2234635391. The cubic root of 313404121 is about 679.2582172110.

Adding to 313404121 its reverse (121404313), we get a palindrome (434808434).

The spelling of 313404121 in words is "three hundred thirteen million, four hundred four thousand, one hundred twenty-one".