1223032311 has 16 divisors (see below), whose sum is σ = 1816772320. Its totient is φ = 813162240.

The previous prime is 1223032301. The next prime is 1223032333. The reversal of 1223032311 is 1132303221.

It is not a de Polignac number, because 1223032311 - 2⁷ = 1223032183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223032301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50650 + ... + 70791.

It is an arithmetic number, because the mean of its divisors is an integer number (113548270).

Almost surely, 2^1223032311 is an apocalyptic number.

1223032311 is a deficient number, since it is larger than the sum of its proper divisors (593740009).

1223032311 is a wasteful number, since it uses less digits than its factorization.

1223032311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121823 (or 121817 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1223032311 is about 34971.8788600212. The cubic root of 1223032311 is about 1069.4142748810.

Adding to 1223032311 its reverse (1132303221), we get a palindrome (2355335532).

The spelling of 1223032311 in words is "one billion, two hundred twenty-three million, thirty-two thousand, three hundred eleven".