1223231120 has 40 divisors (see below), whose sum is σ = 2851706616. Its totient is φ = 487968768.

The previous prime is 1223231101. The next prime is 1223231131. The reversal of 1223231120 is 211323221.

It can be written as a sum of positive squares in 4 ways, for example, as 25240576 + 1197990544 = 5024^2 + 34612^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9344 + ... + 50336.

Almost surely, 2^1223231120 is an apocalyptic number.

1223231120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223231120 is an abundant number, since it is smaller than the sum of its proper divisors (1628475496).

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

1223231120 is a wasteful number, since it uses less digits than its factorization.

1223231120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41379 (or 41373 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1223231120 is about 34974.7211568584. The cubic root of 1223231120 is about 1069.4722176574.

Adding to 1223231120 its reverse (211323221), we get a palindrome (1434554341).

The spelling of 1223231120 in words is "one billion, two hundred twenty-three million, two hundred thirty-one thousand, one hundred twenty".