315732643 has 2 divisors, whose sum is σ = 315732644. Its totient is φ = 315732642.

The previous prime is 315732631. The next prime is 315732667. The reversal of 315732643 is 346237513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315732643 - 2⁵ = 315732611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315732599 and 315732608.

It is not a weakly prime, because it can be changed into another prime (315732943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157866321 + 157866322.

It is an arithmetic number, because the mean of its divisors is an integer number (157866322).

Almost surely, 2^315732643 is an apocalyptic number.

315732643 is a deficient number, since it is larger than the sum of its proper divisors (1).

315732643 is an equidigital number, since it uses as much as digits as its factorization.

315732643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 34.

The square root of 315732643 is about 17768.8672402041. The cubic root of 315732643 is about 680.9363132546.

The spelling of 315732643 in words is "three hundred fifteen million, seven hundred thirty-two thousand, six hundred forty-three".