1173313220 has 12 divisors (see below), whose sum is σ = 2463957804. Its totient is φ = 469325280.

The previous prime is 1173313201. The next prime is 1173313231. The reversal of 1173313220 is 223133711.

It can be written as a sum of positive squares in 2 ways, for example, as 727596676 + 445716544 = 26974^2 + 21112^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29332811 + ... + 29332850.

It is an arithmetic number, because the mean of its divisors is an integer number (205329817).

Almost surely, 2^1173313220 is an apocalyptic number.

1173313220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1173313220 is an abundant number, since it is smaller than the sum of its proper divisors (1290644584).

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

1173313220 is a wasteful number, since it uses less digits than its factorization.

1173313220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58665670 (or 58665668 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 1173313220 is about 34253.6599504345. The cubic root of 1173313220 is about 1054.7219590292.

Adding to 1173313220 its reverse (223133711), we get a palindrome (1396446931).

The spelling of 1173313220 in words is "one billion, one hundred seventy-three million, three hundred thirteen thousand, two hundred twenty".