1243432223 has 4 divisors (see below), whose sum is σ = 1356471528. Its totient is φ = 1130392920.

The previous prime is 1243432189. The next prime is 1243432231. The reversal of 1243432223 is 3222343421.

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 1243432223 - 2¹⁶ = 1243366687 is a prime.

It is a super-2 number, since 2×1243432223² = 3092247386389443458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1243432192 and 1243432201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243432273) 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, 56519636 + ... + 56519657.

It is an arithmetic number, because the mean of its divisors is an integer number (339117882).

Almost surely, 2^1243432223 is an apocalyptic number.

1243432223 is a deficient number, since it is larger than the sum of its proper divisors (113039305).

1243432223 is a wasteful number, since it uses less digits than its factorization.

1243432223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113039304.

The product of its digits is 6912, while the sum is 26.

The square root of 1243432223 is about 35262.3343384978. The cubic root of 1243432223 is about 1075.3273848370.

Adding to 1243432223 its reverse (3222343421), we get a palindrome (4465775644).

The spelling of 1243432223 in words is "one billion, two hundred forty-three million, four hundred thirty-two thousand, two hundred twenty-three".