724542231 has 8 divisors (see below), whose sum is σ = 1104064384. Its totient is φ = 414024120.

The previous prime is 724542229. The next prime is 724542253. The reversal of 724542231 is 132245427.

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

It is not a de Polignac number, because 724542231 - 2¹ = 724542229 is a prime.

It is a super-2 number, since 2×724542231² = 1049922889004914722, 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 (724546231) 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, 17250985 + ... + 17251026.

It is an arithmetic number, because the mean of its divisors is an integer number (138008048).

Almost surely, 2^724542231 is an apocalyptic number.

724542231 is a deficient number, since it is larger than the sum of its proper divisors (379522153).

724542231 is a wasteful number, since it uses less digits than its factorization.

724542231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34502021.

The product of its digits is 13440, while the sum is 30.

The square root of 724542231 is about 26917.3221364979. The cubic root of 724542231 is about 898.1617751940.

Adding to 724542231 its reverse (132245427), we get a palindrome (856787658).

The spelling of 724542231 in words is "seven hundred twenty-four million, five hundred forty-two thousand, two hundred thirty-one".