315421421 has 8 divisors (see below), whose sum is σ = 360909120. Its totient is φ = 270040608.

The previous prime is 315421369. The next prime is 315421427. The reversal of 315421421 is 124124513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315421421 - 2¹⁴ = 315405037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315421427) 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 7 ways as a sum of consecutive naturals, for example, 20291 + ... + 32288.

It is an arithmetic number, because the mean of its divisors is an integer number (45113640).

Almost surely, 2^315421421 is an apocalyptic number.

It is an amenable number.

315421421 is a deficient number, since it is larger than the sum of its proper divisors (45487699).

315421421 is an equidigital number, since it uses as much as digits as its factorization.

315421421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53443.

The product of its digits is 960, while the sum is 23.

The square root of 315421421 is about 17760.1075728724. The cubic root of 315421421 is about 680.7125036109.

Adding to 315421421 its reverse (124124513), we get a palindrome (439545934).

The spelling of 315421421 in words is "three hundred fifteen million, four hundred twenty-one thousand, four hundred twenty-one".