431342403 has 4 divisors (see below), whose sum is σ = 575123208. Its totient is φ = 287561600.

The previous prime is 431342393. The next prime is 431342441. The reversal of 431342403 is 304243134.

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 431342403 - 2⁵ = 431342371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (431342203) 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, 71890398 + ... + 71890403.

It is an arithmetic number, because the mean of its divisors is an integer number (143780802).

Almost surely, 2^431342403 is an apocalyptic number.

431342403 is a deficient number, since it is larger than the sum of its proper divisors (143780805).

431342403 is a wasteful number, since it uses less digits than its factorization.

431342403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143780804.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 431342403 is about 20768.7843409286. The cubic root of 431342403 is about 755.5688609305.

Adding to 431342403 its reverse (304243134), we get a palindrome (735585537).

The spelling of 431342403 in words is "four hundred thirty-one million, three hundred forty-two thousand, four hundred three".