731411643 has 4 divisors (see below), whose sum is σ = 975215528. Its totient is φ = 487607760.

The previous prime is 731411641. The next prime is 731411663. The reversal of 731411643 is 346114137.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 731411643 - 2¹ = 731411641 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 731411643.

It is not an unprimeable number, because it can be changed into a prime (731411641) 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 3 ways as a sum of consecutive naturals, for example, 121901938 + ... + 121901943.

It is an arithmetic number, because the mean of its divisors is an integer number (243803882).

Almost surely, 2^731411643 is an apocalyptic number.

731411643 is a deficient number, since it is larger than the sum of its proper divisors (243803885).

731411643 is a wasteful number, since it uses less digits than its factorization.

731411643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243803884.

The product of its digits is 6048, while the sum is 30.

The square root of 731411643 is about 27044.6231809578. The cubic root of 731411643 is about 900.9913532988.

The spelling of 731411643 in words is "seven hundred thirty-one million, four hundred eleven thousand, six hundred forty-three".