724243431 has 8 divisors (see below), whose sum is σ = 966916720. Its totient is φ = 482199552.

The previous prime is 724243411. The next prime is 724243433. The reversal of 724243431 is 134342427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 724243431 - 2¹⁷ = 724112359 is a prime.

It is a super-2 number, since 2×724243431² = 1049057094693303522, 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 (724243433) 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 7 ways as a sum of consecutive naturals, for example, 154660 + ... + 159273.

It is an arithmetic number, because the mean of its divisors is an integer number (120864590).

Almost surely, 2^724243431 is an apocalyptic number.

724243431 is a deficient number, since it is larger than the sum of its proper divisors (242673289).

724243431 is a wasteful number, since it uses less digits than its factorization.

724243431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314705.

The product of its digits is 16128, while the sum is 30.

The square root of 724243431 is about 26911.7712349076. The cubic root of 724243431 is about 898.0382914147.

Adding to 724243431 its reverse (134342427), we get a palindrome (858585858).

It can be divided in two parts, 72424 and 3431, that added together give a triangular number (75855 = T₃₈₉).

The spelling of 724243431 in words is "seven hundred twenty-four million, two hundred forty-three thousand, four hundred thirty-one".