313348421 has 2 divisors, whose sum is σ = 313348422. Its totient is φ = 313348420.

The previous prime is 313348417. The next prime is 313348423. The reversal of 313348421 is 124843313.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241336225 + 72012196 = 15535^2 + 8486^2 .

It is a cyclic number.

It is not a de Polignac number, because 313348421 - 2² = 313348417 is a prime.

Together with 313348423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313348423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156674210 + 156674211.

It is an arithmetic number, because the mean of its divisors is an integer number (156674211).

Almost surely, 2^313348421 is an apocalyptic number.

It is an amenable number.

313348421 is a deficient number, since it is larger than the sum of its proper divisors (1).

313348421 is an equidigital number, since it uses as much as digits as its factorization.

313348421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 313348421 is about 17701.6502338059. The cubic root of 313348421 is about 679.2179742554.

The spelling of 313348421 in words is "three hundred thirteen million, three hundred forty-eight thousand, four hundred twenty-one".