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223412423 = 1329291423
BaseRepresentation
bin11010101000100…
…00000011000111
3120120101112020012
431110100003013
5424143144143
634100300435
75351655113
oct1524200307
9516345205
10223412423
11105124073
12629a171b
1337393a00
1421958743
1514931418
hexd5100c7

223412423 has 12 divisors (see below), whose sum is σ = 242350560. Its totient is φ = 205860096.

The previous prime is 223412417. The next prime is 223412447. The reversal of 223412423 is 324214322.

It is not a de Polignac number, because 223412423 - 26 = 223412359 is a prime.

It is a super-2 number, since 2×2234124232 = 99826221501461858, 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 (223412023) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 156290 + ... + 157712.

It is an arithmetic number, because the mean of its divisors is an integer number (20195880).

Almost surely, 2223412423 is an apocalyptic number.

223412423 is a deficient number, since it is larger than the sum of its proper divisors (18938137).

223412423 is a wasteful number, since it uses less digits than its factorization.

223412423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378 (or 2365 counting only the distinct ones).

The product of its digits is 2304, while the sum is 23.

The square root of 223412423 is about 14946.9870877043. The cubic root of 223412423 is about 606.7863086032.

Adding to 223412423 its reverse (324214322), we get a palindrome (547626745).

The spelling of 223412423 in words is "two hundred twenty-three million, four hundred twelve thousand, four hundred twenty-three".

Divisors: 1 13 169 929 1423 12077 18499 157001 240487 1321967 17185571 223412423