403230431 has 4 divisors (see below), whose sum is σ = 407761200. Its totient is φ = 398699664.

The previous prime is 403230427. The next prime is 403230439. The reversal of 403230431 is 134032304.

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 403230431 - 2² = 403230427 is a prime.

It is a super-2 number, since 2×403230431² = 325189560968891522, 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 (403230439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2265251 + ... + 2265428.

It is an arithmetic number, because the mean of its divisors is an integer number (101940300).

Almost surely, 2^403230431 is an apocalyptic number.

403230431 is a deficient number, since it is larger than the sum of its proper divisors (4530769).

403230431 is an equidigital number, since it uses as much as digits as its factorization.

403230431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530768.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 403230431 is about 20080.5983725585. The cubic root of 403230431 is about 738.7844855128.

Adding to 403230431 its reverse (134032304), we get a palindrome (537262735).

The spelling of 403230431 in words is "four hundred three million, two hundred thirty thousand, four hundred thirty-one".