31424445 has 24 divisors (see below), whose sum is σ = 58660056. Its totient is φ = 15470208.

The previous prime is 31424401. The next prime is 31424467. The reversal of 31424445 is 54442413.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 488601 + 30935844 = 699^2 + 5562^2 .

It is not a de Polignac number, because 31424445 - 2⁹ = 31423933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26274 + ... + 27443.

It is an arithmetic number, because the mean of its divisors is an integer number (2444169).

Almost surely, 2^31424445 is an apocalyptic number.

It is an amenable number.

31424445 is a deficient number, since it is larger than the sum of its proper divisors (27235611).

31424445 is a wasteful number, since it uses less digits than its factorization.

31424445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53741 (or 53738 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 31424445 is about 5605.7510647548. The cubic root of 31424445 is about 315.5652737360.

Adding to 31424445 its reverse (54442413), we get a palindrome (85866858).

The spelling of 31424445 in words is "thirty-one million, four hundred twenty-four thousand, four hundred forty-five".