31043056 has 40 divisors (see below), whose sum is σ = 65982384. Its totient is φ = 14031360.

The previous prime is 31043041. The next prime is 31043081. The reversal of 31043056 is 65034013.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40630 + ... + 41386.

Almost surely, 2^31043056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31043056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32991192).

31043056 is an abundant number, since it is smaller than the sum of its proper divisors (34939328).

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

31043056 is a wasteful number, since it uses less digits than its factorization.

31043056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009 (or 1003 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 31043056 is about 5571.6295641401. The cubic root of 31043056 is about 314.2834337497.

Adding to 31043056 its reverse (65034013), we get a palindrome (96077069).

The spelling of 31043056 in words is "thirty-one million, forty-three thousand, fifty-six".