431055503 has 4 divisors (see below), whose sum is σ = 433243800. Its totient is φ = 428867208.

The previous prime is 431055491. The next prime is 431055517. The reversal of 431055503 is 305550134.

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 431055503 - 2¹⁰ = 431054479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431055523) 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, 1093853 + ... + 1094246.

It is an arithmetic number, because the mean of its divisors is an integer number (108310950).

Almost surely, 2^431055503 is an apocalyptic number.

431055503 is a deficient number, since it is larger than the sum of its proper divisors (2188297).

431055503 is a wasteful number, since it uses less digits than its factorization.

431055503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188296.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 431055503 is about 20761.8761917125. The cubic root of 431055503 is about 755.4013058873.

The spelling of 431055503 in words is "four hundred thirty-one million, fifty-five thousand, five hundred three".