223431543 has 6 divisors (see below), whose sum is σ = 322734464. Its totient is φ = 148954356.

The previous prime is 223431541. The next prime is 223431547. The reversal of 223431543 is 345134322.

223431543 is a `hidden beast` number, since 223 + 431 + 5 + 4 + 3 = 666.

It is not a de Polignac number, because 223431543 - 2¹ = 223431541 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 (223431541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12412855 + ... + 12412872.

Almost surely, 2^223431543 is an apocalyptic number.

223431543 is a deficient number, since it is larger than the sum of its proper divisors (99302921).

223431543 is a wasteful number, since it uses less digits than its factorization.

223431543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24825733 (or 24825730 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 223431543 is about 14947.6266678025. The cubic root of 223431543 is about 606.8036180305.

Adding to 223431543 its reverse (345134322), we get a palindrome (568565865).

The spelling of 223431543 in words is "two hundred twenty-three million, four hundred thirty-one thousand, five hundred forty-three".