315803 has 2 divisors, whose sum is σ = 315804. Its totient is φ = 315802.

The previous prime is 315779. The next prime is 315811. The reversal of 315803 is 308513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315803 - 2⁶ = 315739 is a prime.

It is not a weakly prime, because it can be changed into another prime (315883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157901 + 157902.

It is an arithmetic number, because the mean of its divisors is an integer number (157902).

2³¹⁵⁸⁰³ is an apocalyptic number.

315803 is a deficient number, since it is larger than the sum of its proper divisors (1).

315803 is an equidigital number, since it uses as much as digits as its factorization.

315803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 315803 is about 561.9635219478. The cubic root of 315803 is about 68.0986888828.

The spelling of 315803 in words is "three hundred fifteen thousand, eight hundred three".