31650350225 has 12 divisors (see below), whose sum is σ = 42265391196. Its totient is φ = 23372566080.

The previous prime is 31650350213. The next prime is 31650350267. The reversal of 31650350225 is 52205305613.

It can be written as a sum of positive squares in 6 ways, for example, as 719741584 + 30930608641 = 26828^2 + 175871^2 .

It is not a de Polignac number, because 31650350225 - 2¹⁶ = 31650284689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31650350191 and 31650350200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48692522 + ... + 48693171.

It is an arithmetic number, because the mean of its divisors is an integer number (3522115933).

Almost surely, 2^31650350225 is an apocalyptic number.

It is an amenable number.

31650350225 is a deficient number, since it is larger than the sum of its proper divisors (10615040971).

31650350225 is a wasteful number, since it uses less digits than its factorization.

31650350225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97385716 (or 97385711 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 31650350225 its reverse (52205305613), we get a palindrome (83855655838).

The spelling of 31650350225 in words is "thirty-one billion, six hundred fifty million, three hundred fifty thousand, two hundred twenty-five".