817231122 has 12 divisors (see below), whose sum is σ = 1770667470. Its totient is φ = 272410368.

The previous prime is 817231117. The next prime is 817231141. The reversal of 817231122 is 221132718.

817231122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 556440921 + 260790201 = 23589^2 + 16149^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22700847 + ... + 22700882.

Almost surely, 2^817231122 is an apocalyptic number.

817231122 is an abundant number, since it is smaller than the sum of its proper divisors (953436348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

817231122 is a wasteful number, since it uses less digits than its factorization.

817231122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45401737 (or 45401734 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 817231122 is about 28587.2545376432. The cubic root of 817231122 is about 934.9354610528.

The spelling of 817231122 in words is "eight hundred seventeen million, two hundred thirty-one thousand, one hundred twenty-two".