223923431 has 2 divisors, whose sum is σ = 223923432. Its totient is φ = 223923430.

The previous prime is 223923407. The next prime is 223923449. The reversal of 223923431 is 134329322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223923431 - 2¹⁰ = 223922407 is a prime.

It is a super-2 number, since 2×223923431² = 100283405901623522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223923394 and 223923403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223923461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111961715 + 111961716.

It is an arithmetic number, because the mean of its divisors is an integer number (111961716).

Almost surely, 2^223923431 is an apocalyptic number.

223923431 is a deficient number, since it is larger than the sum of its proper divisors (1).

223923431 is an equidigital number, since it uses as much as digits as its factorization.

223923431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

The square root of 223923431 is about 14964.0713377075. The cubic root of 223923431 is about 607.2485875065.

The spelling of 223923431 in words is "two hundred twenty-three million, nine hundred twenty-three thousand, four hundred thirty-one".