1223433312 has 96 divisors (see below), whose sum is σ = 3292918272. Its totient is φ = 397545984.

The previous prime is 1223433307. The next prime is 1223433347. The reversal of 1223433312 is 2133343221.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1223433312² = 2993578137822578688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1790923 + ... + 1791605.

It is an arithmetic number, because the mean of its divisors is an integer number (34301232).

Almost surely, 2^1223433312 is an apocalyptic number.

1223433312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223433312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1646459136).

1223433312 is an abundant number, since it is smaller than the sum of its proper divisors (2069484960).

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

1223433312 is a wasteful number, since it uses less digits than its factorization.

1223433312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1132 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

The square root of 1223433312 is about 34977.6115822679. The cubic root of 1223433312 is about 1069.5311399685.

Adding to 1223433312 its reverse (2133343221), we get a palindrome (3356776533).

Subtracting 1223433312 from its reverse (2133343221), we obtain a palindrome (909909909).

The spelling of 1223433312 in words is "one billion, two hundred twenty-three million, four hundred thirty-three thousand, three hundred twelve".