315760421 has 2 divisors, whose sum is σ = 315760422. Its totient is φ = 315760420.

The previous prime is 315760409. The next prime is 315760433. The reversal of 315760421 is 124067513.

It is a balanced prime because it is at equal distance from previous prime (315760409) and next prime (315760433).

It can be written as a sum of positive squares in only one way, i.e., 301022500 + 14737921 = 17350^2 + 3839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315760421 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 (315760021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157880210 + 157880211.

It is an arithmetic number, because the mean of its divisors is an integer number (157880211).

Almost surely, 2^315760421 is an apocalyptic number.

It is an amenable number.

315760421 is a deficient number, since it is larger than the sum of its proper divisors (1).

315760421 is an equidigital number, since it uses as much as digits as its factorization.

315760421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 315760421 is about 17769.6488710385. The cubic root of 315760421 is about 680.9562821478.

The spelling of 315760421 in words is "three hundred fifteen million, seven hundred sixty thousand, four hundred twenty-one".