223121434 has 8 divisors (see below), whose sum is σ = 339267060. Its totient is φ = 110032416.

The previous prime is 223121419. The next prime is 223121441. The reversal of 223121434 is 434121322.

It can be written as a sum of positive squares in 2 ways, for example, as 216178209 + 6943225 = 14703^2 + 2635^2 .

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

It is a super-3 number, since 3×223121434³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763969 + ... + 764260.

Almost surely, 2^223121434 is an apocalyptic number.

223121434 is a deficient number, since it is larger than the sum of its proper divisors (116145626).

223121434 is a wasteful number, since it uses less digits than its factorization.

223121434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528304.

The product of its digits is 1152, while the sum is 22.

The square root of 223121434 is about 14937.2498807511. The cubic root of 223121434 is about 606.5227528993.

Adding to 223121434 its reverse (434121322), we get a palindrome (657242756).

The spelling of 223121434 in words is "two hundred twenty-three million, one hundred twenty-one thousand, four hundred thirty-four".