31444425 has 18 divisors (see below), whose sum is σ = 56320862. Its totient is φ = 16770240.

The previous prime is 31444403. The next prime is 31444453. The reversal of 31444425 is 52444413.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8433216 + 23011209 = 2904^2 + 4797^2 .

It is not a de Polignac number, because 31444425 - 2¹¹ = 31442377 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 69652 + ... + 70101.

Almost surely, 2^31444425 is an apocalyptic number.

It is an amenable number.

31444425 is a deficient number, since it is larger than the sum of its proper divisors (24876437).

31444425 is a wasteful number, since it uses less digits than its factorization.

31444425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139769 (or 139761 counting only the distinct ones).

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

The square root of 31444425 is about 5607.5328799749. The cubic root of 31444425 is about 315.6321394980.

Adding to 31444425 its reverse (52444413), we get a palindrome (83888838).

It can be divided in two parts, 3144 and 4425, that added together give a square (7569 = 87²).

The spelling of 31444425 in words is "thirty-one million, four hundred forty-four thousand, four hundred twenty-five".