1321233432 has 32 divisors (see below), whose sum is σ = 3333960000. Its totient is φ = 436294304.

The previous prime is 1321233401. The next prime is 1321233461. The reversal of 1321233432 is 2343321231.

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 7 ways as a sum of consecutive naturals, for example, 254682 + ... + 259817.

It is an arithmetic number, because the mean of its divisors is an integer number (104186250).

Almost surely, 2^1321233432 is an apocalyptic number.

1321233432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321233432 is an abundant number, since it is smaller than the sum of its proper divisors (2012726568).

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

1321233432 is a wasteful number, since it uses less digits than its factorization.

1321233432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514615 (or 514611 counting only the distinct ones).

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

The square root of 1321233432 is about 36348.7748349239. The cubic root of 1321233432 is about 1097.3028776508.

Adding to 1321233432 its reverse (2343321231), we get a palindrome (3664554663).

The spelling of 1321233432 in words is "one billion, three hundred twenty-one million, two hundred thirty-three thousand, four hundred thirty-two".