403144231 has 4 divisors (see below), whose sum is σ = 460736272. Its totient is φ = 345552192.

The previous prime is 403144229. The next prime is 403144241. The reversal of 403144231 is 132441304.

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 403144231 - 2¹ = 403144229 is a prime.

It is a super-2 number, since 2×403144231² = 325050541977162722, 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 (403144211) 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, 28796010 + ... + 28796023.

It is an arithmetic number, because the mean of its divisors is an integer number (115184068).

Almost surely, 2^403144231 is an apocalyptic number.

403144231 is a deficient number, since it is larger than the sum of its proper divisors (57592041).

403144231 is an equidigital number, since it uses as much as digits as its factorization.

403144231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57592040.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 403144231 is about 20078.4519074554. The cubic root of 403144231 is about 738.7318375674.

Adding to 403144231 its reverse (132441304), we get a palindrome (535585535).

The spelling of 403144231 in words is "four hundred three million, one hundred forty-four thousand, two hundred thirty-one".