731161056 has 24 divisors (see below), whose sum is σ = 1919298024. Its totient is φ = 243720320.

The previous prime is 731161051. The next prime is 731161063. The reversal of 731161056 is 650161137.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×731161056² = 1069192979622070272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731161051) 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 in 3 ways as a sum of consecutive naturals, for example, 3808035 + ... + 3808226.

It is an arithmetic number, because the mean of its divisors is an integer number (79970751).

Almost surely, 2^731161056 is an apocalyptic number.

It is an amenable number.

731161056 is an abundant number, since it is smaller than the sum of its proper divisors (1188136968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

731161056 is a wasteful number, since it uses less digits than its factorization.

731161056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7616274 (or 7616266 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 731161056 is about 27039.9899408265. The cubic root of 731161056 is about 900.8884461276. Note that the first 3 decimals are identical.

The spelling of 731161056 in words is "seven hundred thirty-one million, one hundred sixty-one thousand, fifty-six".