2315421 has 24 divisors (see below), whose sum is σ = 3550976. Its totient is φ = 1451520.

The previous prime is 2315413. The next prime is 2315461. The reversal of 2315421 is 1245132.

2315421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2315421 - 2³ = 2315413 is a prime.

It is a super-2 number, since 2×2315421² = 10722348814482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2315394 and 2315403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11901 + ... + 12093.

2^2315421 is an apocalyptic number.

It is an amenable number.

2315421 is a deficient number, since it is larger than the sum of its proper divisors (1235555).

2315421 is a wasteful number, since it uses less digits than its factorization.

2315421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 270 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 2315421 is about 1521.6507483651. The cubic root of 2315421 is about 132.2949670975.

The spelling of 2315421 in words is "two million, three hundred fifteen thousand, four hundred twenty-one".