31122102209 has 8 divisors (see below), whose sum is σ = 33959943360. Its totient is φ = 28285687600.

The previous prime is 31122102203. The next prime is 31122102223. The reversal of 31122102209 is 90220122113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31122102209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31122102203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310757 + ... + 398514.

It is an arithmetic number, because the mean of its divisors is an integer number (4244992920).

Almost surely, 2^31122102209 is an apocalyptic number.

It is an amenable number.

31122102209 is a deficient number, since it is larger than the sum of its proper divisors (2837841151).

31122102209 is a wasteful number, since it uses less digits than its factorization.

31122102209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713271.

The product of its (nonzero) digits is 432, while the sum is 23.

It can be divided in two parts, 31122 and 102209, that added together give a palindrome (133331).

The spelling of 31122102209 in words is "thirty-one billion, one hundred twenty-two million, one hundred two thousand, two hundred nine".