31426244 has 24 divisors (see below), whose sum is σ = 56343168. Its totient is φ = 15331680.

The previous prime is 31426243. The next prime is 31426267. The reversal of 31426244 is 44262413.

It is not an unprimeable number, because it can be changed into a prime (31426243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57179 + ... + 57725.

It is an arithmetic number, because the mean of its divisors is an integer number (2347632).

Almost surely, 2^31426244 is an apocalyptic number.

It is an amenable number.

31426244 is a deficient number, since it is larger than the sum of its proper divisors (24916924).

31426244 is a wasteful number, since it uses less digits than its factorization.

31426244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875 (or 873 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 31426244 is about 5605.9115226696. The cubic root of 31426244 is about 315.5712954928.

Adding to 31426244 its reverse (44262413), we get a palindrome (75688657).

The spelling of 31426244 in words is "thirty-one million, four hundred twenty-six thousand, two hundred forty-four".