313423421 has 4 divisors (see below), whose sum is σ = 313460700. Its totient is φ = 313386144.

The previous prime is 313423417. The next prime is 313423433. The reversal of 313423421 is 124324313.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 70375321 + 243048100 = 8389^2 + 15590^2 .

It is a cyclic number.

It is not a de Polignac number, because 313423421 - 2² = 313423417 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 (313423471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575 + ... + 25043.

It is an arithmetic number, because the mean of its divisors is an integer number (78365175).

Almost surely, 2^313423421 is an apocalyptic number.

It is an amenable number.

313423421 is a deficient number, since it is larger than the sum of its proper divisors (37279).

313423421 is a wasteful number, since it uses less digits than its factorization.

313423421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37278.

The product of its digits is 1728, while the sum is 23.

The square root of 313423421 is about 17703.7685536159. The cubic root of 313423421 is about 679.2721602466.

Adding to 313423421 its reverse (124324313), we get a palindrome (437747734).

The spelling of 313423421 in words is "three hundred thirteen million, four hundred twenty-three thousand, four hundred twenty-one".