731173216 has 12 divisors (see below), whose sum is σ = 1439497332. Its totient is φ = 365586592.

The previous prime is 731173187. The next prime is 731173217. The reversal of 731173216 is 612371137.

It is a super-2 number, since 2×731173216² = 1069228543591565312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731173217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11424550 + ... + 11424613.

It is an arithmetic number, because the mean of its divisors is an integer number (119958111).

Almost surely, 2^731173216 is an apocalyptic number.

It is an amenable number.

731173216 is a deficient number, since it is larger than the sum of its proper divisors (708324116).

731173216 is a wasteful number, since it uses less digits than its factorization.

731173216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22849173 (or 22849165 counting only the distinct ones).

The product of its digits is 5292, while the sum is 31.

The square root of 731173216 is about 27040.2147920463. The cubic root of 731173216 is about 900.8934403500.

The spelling of 731173216 in words is "seven hundred thirty-one million, one hundred seventy-three thousand, two hundred sixteen".