315520103 has 4 divisors (see below), whose sum is σ = 315830760. Its totient is φ = 315209448.

The previous prime is 315520097. The next prime is 315520129. The reversal of 315520103 is 301025513.

315520103 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 315520103 - 2⁶ = 315520039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315520703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153800 + ... + 155837.

It is an arithmetic number, because the mean of its divisors is an integer number (78957690).

Almost surely, 2^315520103 is an apocalyptic number.

315520103 is a deficient number, since it is larger than the sum of its proper divisors (310657).

315520103 is a wasteful number, since it uses less digits than its factorization.

315520103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310656.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 315520103 is about 17762.8855482436. The cubic root of 315520103 is about 680.7834849105.

Adding to 315520103 its reverse (301025513), we get a palindrome (616545616).

The spelling of 315520103 in words is "three hundred fifteen million, five hundred twenty thousand, one hundred three".