731361873 has 20 divisors (see below), whose sum is σ = 1072721840. Its totient is φ = 443223000.

The previous prime is 731361871. The next prime is 731361901. The reversal of 731361873 is 378163137.

It is not a de Polignac number, because 731361873 - 2¹ = 731361871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731361871) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35598 + ... + 52248.

It is an arithmetic number, because the mean of its divisors is an integer number (53636092).

Almost surely, 2^731361873 is an apocalyptic number.

It is an amenable number.

731361873 is a deficient number, since it is larger than the sum of its proper divisors (341359967).

731361873 is an equidigital number, since it uses as much as digits as its factorization.

731361873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16698 (or 16665 counting only the distinct ones).

The product of its digits is 63504, while the sum is 39.

The square root of 731361873 is about 27043.7030193722. The cubic root of 731361873 is about 900.9709164002.

The spelling of 731361873 in words is "seven hundred thirty-one million, three hundred sixty-one thousand, eight hundred seventy-three".