743505231 has 16 divisors (see below), whose sum is σ = 1149872384. Its totient is φ = 418518144.

The previous prime is 743505227. The next prime is 743505247. The reversal of 743505231 is 132505347.

It is not a de Polignac number, because 743505231 - 2² = 743505227 is a prime.

It is a super-2 number, since 2×743505231² = 1105600057048726722, 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 (743605231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262810 + ... + 265623.

It is an arithmetic number, because the mean of its divisors is an integer number (71867024).

Almost surely, 2^743505231 is an apocalyptic number.

743505231 is a deficient number, since it is larger than the sum of its proper divisors (406367153).

743505231 is a wasteful number, since it uses less digits than its factorization.

743505231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528510.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 743505231 is about 27267.2923298226. The cubic root of 743505231 is about 905.9300719874.

The spelling of 743505231 in words is "seven hundred forty-three million, five hundred five thousand, two hundred thirty-one".