321313451 has 2 divisors, whose sum is σ = 321313452. Its totient is φ = 321313450.

The previous prime is 321313423. The next prime is 321313459. The reversal of 321313451 is 154313123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321313451 - 2⁶ = 321313387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (321313459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160656725 + 160656726.

It is an arithmetic number, because the mean of its divisors is an integer number (160656726).

Almost surely, 2^321313451 is an apocalyptic number.

321313451 is a deficient number, since it is larger than the sum of its proper divisors (1).

321313451 is an equidigital number, since it uses as much as digits as its factorization.

321313451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 321313451 is about 17925.2182971366. The cubic root of 321313451 is about 684.9249218868.

Adding to 321313451 its reverse (154313123), we get a palindrome (475626574).

The spelling of 321313451 in words is "three hundred twenty-one million, three hundred thirteen thousand, four hundred fifty-one".