31441225 has 12 divisors (see below), whose sum is σ = 39087900. Its totient is φ = 25088000.

The previous prime is 31441217. The next prime is 31441229. The reversal of 31441225 is 52214413.

It can be written as a sum of positive squares in 6 ways, for example, as 204304 + 31236921 = 452^2 + 5589^2 .

It is not a de Polignac number, because 31441225 - 2³ = 31441217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31441196 and 31441205.

It is not an unprimeable number, because it can be changed into a prime (31441229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9825 + ... + 12625.

It is an arithmetic number, because the mean of its divisors is an integer number (3257325).

Almost surely, 2^31441225 is an apocalyptic number.

It is an amenable number.

31441225 is a deficient number, since it is larger than the sum of its proper divisors (7646675).

31441225 is a wasteful number, since it uses less digits than its factorization.

31441225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260 (or 3255 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 31441225 is about 5607.2475422439. The cubic root of 31441225 is about 315.6214321722.

Adding to 31441225 its reverse (52214413), we get a palindrome (83655638).

The spelling of 31441225 in words is "thirty-one million, four hundred forty-one thousand, two hundred twenty-five".