31424444 has 12 divisors (see below), whose sum is σ = 55331304. Its totient is φ = 15615504.

The previous prime is 31424401. The next prime is 31424467. The reversal of 31424444 is 44442413.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23447 + ... + 24750.

It is an arithmetic number, because the mean of its divisors is an integer number (4610942).

Almost surely, 2^31424444 is an apocalyptic number.

It is an amenable number.

31424444 is a deficient number, since it is larger than the sum of its proper divisors (23906860).

31424444 is a wasteful number, since it uses less digits than its factorization.

31424444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48364 (or 48362 counting only the distinct ones).

The product of its digits is 6144, while the sum is 26.

The square root of 31424444 is about 5605.7509755607. The cubic root of 31424444 is about 315.5652703887.

Adding to 31424444 its reverse (44442413), we get a palindrome (75866857).

The spelling of 31424444 in words is "thirty-one million, four hundred twenty-four thousand, four hundred forty-four".