31300225 has 12 divisors (see below), whose sum is σ = 42341040. Its totient is φ = 22763600.

The previous prime is 31300219. The next prime is 31300231. The reversal of 31300225 is 52200313.

It is an interprime number because it is at equal distance from previous prime (31300219) and next prime (31300231).

It is not a de Polignac number, because 31300225 - 2¹¹ = 31298177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31300199 and 31300208.

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, 56635 + ... + 57184.

It is an arithmetic number, because the mean of its divisors is an integer number (3528420).

Almost surely, 2^31300225 is an apocalyptic number.

It is an amenable number.

31300225 is a deficient number, since it is larger than the sum of its proper divisors (11040815).

31300225 is a wasteful number, since it uses less digits than its factorization.

31300225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113840 (or 113835 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 31300225 is about 5594.6604007750. The cubic root of 31300225 is about 315.1489175778.

Adding to 31300225 its reverse (52200313), we get a palindrome (83500538).

The spelling of 31300225 in words is "thirty-one million, three hundred thousand, two hundred twenty-five".