222330431 has 4 divisors (see below), whose sum is σ = 223615752. Its totient is φ = 221045112.

The previous prime is 222330401. The next prime is 222330463. The reversal of 222330431 is 134033222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134033222 = 2 ⋅67016611.

It is a cyclic number.

It is not a de Polignac number, because 222330431 - 2¹⁰ = 222329407 is a prime.

It is a super-2 number, since 2×222330431² = 98861641097291522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222330401) 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, 642401 + ... + 642746.

It is an arithmetic number, because the mean of its divisors is an integer number (55903938).

Almost surely, 2^222330431 is an apocalyptic number.

222330431 is a deficient number, since it is larger than the sum of its proper divisors (1285321).

222330431 is a wasteful number, since it uses less digits than its factorization.

222330431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285320.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 222330431 is about 14910.7488410207. The cubic root of 222330431 is about 605.8051625232.

Adding to 222330431 its reverse (134033222), we get a palindrome (356363653).

The spelling of 222330431 in words is "two hundred twenty-two million, three hundred thirty thousand, four hundred thirty-one".