403243231 has 4 divisors (see below), whose sum is σ = 417148200. Its totient is φ = 389338264.

The previous prime is 403243223. The next prime is 403243237. The reversal of 403243231 is 132342304.

It is a happy number.

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 403243231 - 2³ = 403243223 is a prime.

It is a super-2 number, since 2×403243231² = 325210206694638722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403243237) 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 3 ways as a sum of consecutive naturals, for example, 6952441 + ... + 6952498.

It is an arithmetic number, because the mean of its divisors is an integer number (104287050).

Almost surely, 2^403243231 is an apocalyptic number.

403243231 is a deficient number, since it is larger than the sum of its proper divisors (13904969).

403243231 is a wasteful number, since it uses less digits than its factorization.

403243231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13904968.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 403243231 is about 20080.9170856313. The cubic root of 403243231 is about 738.7923026653.

Adding to 403243231 its reverse (132342304), we get a palindrome (535585535).

The spelling of 403243231 in words is "four hundred three million, two hundred forty-three thousand, two hundred thirty-one".