222405431 has 4 divisors (see below), whose sum is σ = 234111000. Its totient is φ = 210699864.

The previous prime is 222405401. The next prime is 222405433. The reversal of 222405431 is 134504222.

It is a happy number.

222405431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 222405431 - 2⁶ = 222405367 is a prime.

It is a super-2 number, since 2×222405431² = 98928351476591522, 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 = 222405397 and 222405406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222405433) 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, 5852756 + ... + 5852793.

It is an arithmetic number, because the mean of its divisors is an integer number (58527750).

Almost surely, 2^222405431 is an apocalyptic number.

222405431 is a deficient number, since it is larger than the sum of its proper divisors (11705569).

222405431 is a wasteful number, since it uses less digits than its factorization.

222405431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11705568.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 222405431 is about 14913.2635931911. The cubic root of 222405431 is about 605.8732747754.

Adding to 222405431 its reverse (134504222), we get a palindrome (356909653).

The spelling of 222405431 in words is "two hundred twenty-two million, four hundred five thousand, four hundred thirty-one".