315421023 has 16 divisors (see below), whose sum is σ = 436474080. Its totient is φ = 202371456.

The previous prime is 315421019. The next prime is 315421069. The reversal of 315421023 is 320124513.

It is not a de Polignac number, because 315421023 - 2² = 315421019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315421003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21861 + ... + 33297.

It is an arithmetic number, because the mean of its divisors is an integer number (27279630).

Almost surely, 2^315421023 is an apocalyptic number.

315421023 is a deficient number, since it is larger than the sum of its proper divisors (121053057).

315421023 is a wasteful number, since it uses less digits than its factorization.

315421023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11786.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 315421023 is about 17760.0963679818. The cubic root of 315421023 is about 680.7122173022.

Adding to 315421023 its reverse (320124513), we get a palindrome (635545536).

The spelling of 315421023 in words is "three hundred fifteen million, four hundred twenty-one thousand, twenty-three".