223431261 has 8 divisors (see below), whose sum is σ = 297995040. Its totient is φ = 148910832.

The previous prime is 223431259. The next prime is 223431281. The reversal of 223431261 is 162134322.

223431261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223431261 - 2¹ = 223431259 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223431281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4155 + ... + 21543.

It is an arithmetic number, because the mean of its divisors is an integer number (37249380).

Almost surely, 2^223431261 is an apocalyptic number.

It is an amenable number.

223431261 is a deficient number, since it is larger than the sum of its proper divisors (74563779).

223431261 is a wasteful number, since it uses less digits than its factorization.

223431261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21675.

The product of its digits is 1728, while the sum is 24.

The square root of 223431261 is about 14947.6172348639. The cubic root of 223431261 is about 606.8033627417.

Adding to 223431261 its reverse (162134322), we get a palindrome (385565583).

The spelling of 223431261 in words is "two hundred twenty-three million, four hundred thirty-one thousand, two hundred sixty-one".