31043444 has 18 divisors (see below), whose sum is σ = 55843830. Its totient is φ = 15099552.

The previous prime is 31043443. The next prime is 31043447. The reversal of 31043444 is 44434013.

It can be written as a sum of positive squares in 3 ways, for example, as 13235044 + 17808400 = 3638^2 + 4220^2 .

It is a super-2 number, since 2×31043444² = 1927390830762272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31043443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2642 + ... + 8310.

It is an arithmetic number, because the mean of its divisors is an integer number (3102435).

Almost surely, 2^31043444 is an apocalyptic number.

It is an amenable number.

31043444 is a deficient number, since it is larger than the sum of its proper divisors (24800386).

31043444 is a wasteful number, since it uses less digits than its factorization.

31043444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747 (or 5708 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 31043444 is about 5571.6643832880. The cubic root of 31043444 is about 314.2847431296.

Adding to 31043444 its reverse (44434013), we get a palindrome (75477457).

The spelling of 31043444 in words is "thirty-one million, forty-three thousand, four hundred forty-four".