731049 has 8 divisors (see below), whose sum is σ = 1063392. Its totient is φ = 443040.

The previous prime is 731047. The next prime is 731053. The reversal of 731049 is 940137.

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

It is not a de Polignac number, because 731049 - 2¹ = 731047 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (731041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11044 + ... + 11109.

It is an arithmetic number, because the mean of its divisors is an integer number (132924).

2⁷³¹⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

731049 is a deficient number, since it is larger than the sum of its proper divisors (332343).

731049 is a wasteful number, since it uses less digits than its factorization.

731049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22167.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 731049 is about 855.0140349725. The cubic root of 731049 is about 90.0842421105.

Subtracting from 731049 its sum of digits (24), we obtain a square (731025 = 855²).

The spelling of 731049 in words is "seven hundred thirty-one thousand, forty-nine".