31332225 has 12 divisors (see below), whose sum is σ = 51802736. Its totient is φ = 16710480.

The previous prime is 31332193. The next prime is 31332247. The reversal of 31332225 is 52223313.

It is not a de Polignac number, because 31332225 - 2⁵ = 31332193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208807 + ... + 208956.

Almost surely, 2^31332225 is an apocalyptic number.

It is an amenable number.

31332225 is a deficient number, since it is larger than the sum of its proper divisors (20470511).

31332225 is a wasteful number, since it uses less digits than its factorization.

31332225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417776 (or 417771 counting only the distinct ones).

The product of its digits is 1080, while the sum is 21.

The square root of 31332225 is about 5597.5195399391. The cubic root of 31332225 is about 315.2562792189.

Adding to 31332225 its reverse (52223313), we get a palindrome (83555538).

The spelling of 31332225 in words is "thirty-one million, three hundred thirty-two thousand, two hundred twenty-five".