724931313 has 16 divisors (see below), whose sum is σ = 976962816. Its totient is φ = 478106640.

The previous prime is 724931309. The next prime is 724931369. The reversal of 724931313 is 313139427.

It is not a de Polignac number, because 724931313 - 2² = 724931309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (724931303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359478 + ... + 361488.

It is an arithmetic number, because the mean of its divisors is an integer number (61060176).

Almost surely, 2^724931313 is an apocalyptic number.

It is an amenable number.

724931313 is a deficient number, since it is larger than the sum of its proper divisors (252031503).

724931313 is a wasteful number, since it uses less digits than its factorization.

724931313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244.

The product of its digits is 13608, while the sum is 33.

The square root of 724931313 is about 26924.5485198917. The cubic root of 724931313 is about 898.3225185479.

The spelling of 724931313 in words is "seven hundred twenty-four million, nine hundred thirty-one thousand, three hundred thirteen".