315001421 has 16 divisors (see below), whose sum is σ = 364383360. Its totient is φ = 266735040.

The previous prime is 315001397. The next prime is 315001429. The reversal of 315001421 is 124100513.

It is a cyclic number.

It is not a de Polignac number, because 315001421 - 2¹⁰ = 315000397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315001421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315001429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246035 + ... + 247311.

It is an arithmetic number, because the mean of its divisors is an integer number (22773960).

Almost surely, 2^315001421 is an apocalyptic number.

It is an amenable number.

315001421 is a deficient number, since it is larger than the sum of its proper divisors (49381939).

315001421 is a wasteful number, since it uses less digits than its factorization.

315001421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 315001421 is about 17748.2793813936. The cubic root of 315001421 is about 680.4102347276.

Adding to 315001421 its reverse (124100513), we get a palindrome (439101934).

The spelling of 315001421 in words is "three hundred fifteen million, one thousand, four hundred twenty-one".