31445110225 has 12 divisors (see below), whose sum is σ = 39377998620. Its totient is φ = 24907016000.

The previous prime is 31445110199. The next prime is 31445110241. The reversal of 31445110225 is 52201154413.

It can be written as a sum of positive squares in 6 ways, for example, as 1075774401 + 30369335824 = 32799^2 + 174268^2 .

It is not a de Polignac number, because 31445110225 - 2⁷ = 31445110097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31445110193 and 31445110202.

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 11 ways as a sum of consecutive naturals, for example, 6224230 + ... + 6229279.

It is an arithmetic number, because the mean of its divisors is an integer number (3281499885).

Almost surely, 2^31445110225 is an apocalyptic number.

It is an amenable number.

31445110225 is a deficient number, since it is larger than the sum of its proper divisors (7932888395).

31445110225 is a wasteful number, since it uses less digits than its factorization.

31445110225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12453620 (or 12453615 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 31445110225 its reverse (52201154413), we get a palindrome (83646264638).

The spelling of 31445110225 in words is "thirty-one billion, four hundred forty-five million, one hundred ten thousand, two hundred twenty-five".