31350331225 has 12 divisors (see below), whose sum is σ = 39822568380. Its totient is φ = 24468550400.

The previous prime is 31350331211. The next prime is 31350331241. The reversal of 31350331225 is 52213305313.

It can be written as a sum of positive squares in 6 ways, for example, as 4284487936 + 27065843289 = 65456^2 + 164517^2 .

It is not a de Polignac number, because 31350331225 - 2¹⁵ = 31350298457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31350331193 and 31350331202.

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, 15291820 + ... + 15293869.

It is an arithmetic number, because the mean of its divisors is an integer number (3318547365).

Almost surely, 2^31350331225 is an apocalyptic number.

It is an amenable number.

31350331225 is a deficient number, since it is larger than the sum of its proper divisors (8472237155).

31350331225 is a wasteful number, since it uses less digits than its factorization.

31350331225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30585740 (or 30585735 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 28.

Adding to 31350331225 its reverse (52213305313), we get a palindrome (83563636538).

The spelling of 31350331225 in words is "thirty-one billion, three hundred fifty million, three hundred thirty-one thousand, two hundred twenty-five".