31234225 has 24 divisors (see below), whose sum is σ = 43068672. Its totient is φ = 22276800.

The previous prime is 31234201. The next prime is 31234237. The reversal of 31234225 is 52243213.

It is not a de Polignac number, because 31234225 - 2¹¹ = 31232177 is a prime.

It is a super-2 number, since 2×31234225² = 1951153622701250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31234196 and 31234205.

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 23 ways as a sum of consecutive naturals, for example, 13504 + ... + 15646.

It is an arithmetic number, because the mean of its divisors is an integer number (1794528).

Almost surely, 2^31234225 is an apocalyptic number.

It is an amenable number.

31234225 is a deficient number, since it is larger than the sum of its proper divisors (11834447).

31234225 is a wasteful number, since it uses less digits than its factorization.

31234225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217 (or 2212 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 31234225 is about 5588.7588067477. The cubic root of 31234225 is about 314.9272528741.

Adding to 31234225 its reverse (52243213), we get a palindrome (83477438).

It can be divided in two parts, 31 and 234225, that added together give a 4-th power (234256 = 22⁴).

The spelling of 31234225 in words is "thirty-one million, two hundred thirty-four thousand, two hundred twenty-five".