2405231 has 4 divisors (see below), whose sum is σ = 2488200. Its totient is φ = 2322264.

The previous prime is 2405213. The next prime is 2405239. The reversal of 2405231 is 1325042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2405231 - 2¹⁸ = 2143087 is a prime.

It is a super-2 number, since 2×2405231² = 11570272326722, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2405239) 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 3 ways as a sum of consecutive naturals, for example, 41441 + ... + 41498.

It is an arithmetic number, because the mean of its divisors is an integer number (622050).

2^2405231 is an apocalyptic number.

2405231 is a deficient number, since it is larger than the sum of its proper divisors (82969).

2405231 is an equidigital number, since it uses as much as digits as its factorization.

2405231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82968.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2405231 is about 1550.8807175279. The cubic root of 2405231 is about 133.9837917576.

It can be divided in two parts, 2405 and 231, that multiplied together give a palindrome (555555).

The spelling of 2405231 in words is "two million, four hundred five thousand, two hundred thirty-one".