731089943 has 6 divisors (see below), whose sum is σ = 732909384. Its totient is φ = 729273276.

The previous prime is 731089939. The next prime is 731089949. The reversal of 731089943 is 349980137.

It is a happy number.

731089943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 731089943 - 2² = 731089939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 731089894 and 731089903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731089949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 687230 + ... + 688292.

It is an arithmetic number, because the mean of its divisors is an integer number (122151564).

Almost surely, 2^731089943 is an apocalyptic number.

731089943 is a deficient number, since it is larger than the sum of its proper divisors (1819441).

731089943 is an frugal number, since it uses more digits than its factorization.

731089943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 731089943 is about 27038.6749490429. The cubic root of 731089943 is about 900.8592382640.

The spelling of 731089943 in words is "seven hundred thirty-one million, eighty-nine thousand, nine hundred forty-three".