1232112311 has 4 divisors (see below), whose sum is σ = 1238995800. Its totient is φ = 1225228824.

The previous prime is 1232112307. The next prime is 1232112353. The reversal of 1232112311 is 1132112321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1232112311 - 2² = 1232112307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232112311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232118311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3441476 + ... + 3441833.

It is an arithmetic number, because the mean of its divisors is an integer number (309748950).

Almost surely, 2^1232112311 is an apocalyptic number.

1232112311 is a deficient number, since it is larger than the sum of its proper divisors (6883489).

1232112311 is an equidigital number, since it uses as much as digits as its factorization.

1232112311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6883488.

The product of its digits is 72, while the sum is 17.

The square root of 1232112311 is about 35101.4573913962. The cubic root of 1232112311 is about 1072.0542569140.

Adding to 1232112311 its reverse (1132112321), we get a palindrome (2364224632).

The spelling of 1232112311 in words is "one billion, two hundred thirty-two million, one hundred twelve thousand, three hundred eleven".