731479723 has 16 divisors (see below), whose sum is σ = 844663680. Its totient is φ = 627434496.

The previous prime is 731479711. The next prime is 731479733. The reversal of 731479723 is 327974137.

It is not a de Polignac number, because 731479723 - 2²¹ = 729382571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 731479723.

It is not an unprimeable number, because it can be changed into a prime (731479733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3490 + ... + 38407.

It is an arithmetic number, because the mean of its divisors is an integer number (52791480).

Almost surely, 2^731479723 is an apocalyptic number.

731479723 is a deficient number, since it is larger than the sum of its proper divisors (113183957).

731479723 is a wasteful number, since it uses less digits than its factorization.

731479723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42006.

The product of its digits is 222264, while the sum is 43.

The square root of 731479723 is about 27045.8818122094. The cubic root of 731479723 is about 901.0193072737.

The spelling of 731479723 in words is "seven hundred thirty-one million, four hundred seventy-nine thousand, seven hundred twenty-three".