222115431 has 8 divisors (see below), whose sum is σ = 299481840. Its totient is φ = 146412992.

The previous prime is 222115429. The next prime is 222115433. The reversal of 222115431 is 134511222.

It is an interprime number because it is at equal distance from previous prime (222115429) and next prime (222115433).

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

It is a cyclic number.

It is not a de Polignac number, because 222115431 - 2¹ = 222115429 is a prime.

It is a super-2 number, since 2×222115431² = 98670529376631522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222115398 and 222115407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222115433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415680 + ... + 416213.

It is an arithmetic number, because the mean of its divisors is an integer number (37435230).

Almost surely, 2^222115431 is an apocalyptic number.

222115431 is a deficient number, since it is larger than the sum of its proper divisors (77366409).

222115431 is an equidigital number, since it uses as much as digits as its factorization.

222115431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831985.

The product of its digits is 480, while the sum is 21.

The square root of 222115431 is about 14903.5375330825. The cubic root of 222115431 is about 605.6098224664.

Adding to 222115431 its reverse (134511222), we get a palindrome (356626653).

The spelling of 222115431 in words is "two hundred twenty-two million, one hundred fifteen thousand, four hundred thirty-one".