31122014225 has 12 divisors (see below), whose sum is σ = 39167289264. Its totient is φ = 24526003920.

The previous prime is 31122014221. The next prime is 31122014227. The reversal of 31122014225 is 52241022113.

It is not a de Polignac number, because 31122014225 - 2² = 31122014221 is a prime.

It is a super-2 number, since 2×31122014225² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31122014225.

It is not an unprimeable number, because it can be changed into a prime (31122014221) by changing a digit.

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, 9288479 + ... + 9291828.

It is an arithmetic number, because the mean of its divisors is an integer number (3263940772).

Almost surely, 2^31122014225 is an apocalyptic number.

It is an amenable number.

31122014225 is a deficient number, since it is larger than the sum of its proper divisors (8045275039).

31122014225 is a wasteful number, since it uses less digits than its factorization.

31122014225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18580384 (or 18580379 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 31122014225 its reverse (52241022113), we get a palindrome (83363036338).

The spelling of 31122014225 in words is "thirty-one billion, one hundred twenty-two million, fourteen thousand, two hundred twenty-five".