315301021 has 16 divisors (see below), whose sum is σ = 373536000. Its totient is φ = 260402688.

The previous prime is 315300971. The next prime is 315301027. The reversal of 315301021 is 120103513.

It is not a de Polignac number, because 315301021 - 2⁷ = 315300893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315300986 and 315301004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315301027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120301 + ... + 122893.

It is an arithmetic number, because the mean of its divisors is an integer number (23346000).

Almost surely, 2^315301021 is an apocalyptic number.

It is an amenable number.

315301021 is a deficient number, since it is larger than the sum of its proper divisors (58234979).

315301021 is a wasteful number, since it uses less digits than its factorization.

315301021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3228.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 315301021 is about 17756.7176302379. The cubic root of 315301021 is about 680.6258806463.

Adding to 315301021 its reverse (120103513), we get a palindrome (435404534).

The spelling of 315301021 in words is "three hundred fifteen million, three hundred one thousand, twenty-one".