315432071 has 2 divisors, whose sum is σ = 315432072. Its totient is φ = 315432070.

The previous prime is 315432049. The next prime is 315432151. The reversal of 315432071 is 170234513.

It is a weak prime.

It is an emirp because it is prime and its reverse (170234513) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315432071 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315432071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315432001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157716035 + 157716036.

It is an arithmetic number, because the mean of its divisors is an integer number (157716036).

Almost surely, 2^315432071 is an apocalyptic number.

315432071 is a deficient number, since it is larger than the sum of its proper divisors (1).

315432071 is an equidigital number, since it uses as much as digits as its factorization.

315432071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 315432071 is about 17760.4073996066. The cubic root of 315432071 is about 680.7201647970.

Adding to 315432071 its reverse (170234513), we get a palindrome (485666584).

The spelling of 315432071 in words is "three hundred fifteen million, four hundred thirty-two thousand, seventy-one".