313720453 has 2 divisors, whose sum is σ = 313720454. Its totient is φ = 313720452.

The previous prime is 313720439. The next prime is 313720501. The reversal of 313720453 is 354027313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170511364 + 143209089 = 13058^2 + 11967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313720453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313720423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156860226 + 156860227.

It is an arithmetic number, because the mean of its divisors is an integer number (156860227).

Almost surely, 2^313720453 is an apocalyptic number.

It is an amenable number.

313720453 is a deficient number, since it is larger than the sum of its proper divisors (1).

313720453 is an equidigital number, since it uses as much as digits as its factorization.

313720453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 313720453 is about 17712.1555153516. The cubic root of 313720453 is about 679.4866750217.

Adding to 313720453 its reverse (354027313), we get a palindrome (667747766).

The spelling of 313720453 in words is "three hundred thirteen million, seven hundred twenty thousand, four hundred fifty-three".