313246421 has 2 divisors, whose sum is σ = 313246422. Its totient is φ = 313246420.

The previous prime is 313246411. The next prime is 313246441. The reversal of 313246421 is 124642313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279257521 + 33988900 = 16711^2 + 5830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313246421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313246411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156623210 + 156623211.

It is an arithmetic number, because the mean of its divisors is an integer number (156623211).

Almost surely, 2^313246421 is an apocalyptic number.

It is an amenable number.

313246421 is a deficient number, since it is larger than the sum of its proper divisors (1).

313246421 is an equidigital number, since it uses as much as digits as its factorization.

313246421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

The square root of 313246421 is about 17698.7689119893. The cubic root of 313246421 is about 679.1442674301.

Adding to 313246421 its reverse (124642313), we get a palindrome (437888734).

The spelling of 313246421 in words is "three hundred thirteen million, two hundred forty-six thousand, four hundred twenty-one".