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12223233031 = 21001582031
BaseRepresentation
bin10110110001000111…
…11011110000000111
31011112212011120111111
423120203323300013
5200013121424111
65340522145451
7611621523622
oct133043736007
934485146444
1012223233031
115202772989
122451652287
1311ca494989
1483d52adb9
154b8168a21
hex2d88fbc07

12223233031 has 4 divisors (see below), whose sum is σ = 12223836064. Its totient is φ = 12222630000.

The previous prime is 12223233017. The next prime is 12223233041. The reversal of 12223233031 is 13033232221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13033232221 = 71183566651.

It is a cyclic number.

It is not a de Polignac number, because 12223233031 - 211 = 12223230983 is a prime.

It is a super-2 number, since 2×122232330312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12223232993 and 12223233011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223233041) 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, 270015 + ... + 312016.

It is an arithmetic number, because the mean of its divisors is an integer number (3055959016).

Almost surely, 212223233031 is an apocalyptic number.

12223233031 is a deficient number, since it is larger than the sum of its proper divisors (603033).

12223233031 is an equidigital number, since it uses as much as digits as its factorization.

12223233031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603032.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 12223233031 its reverse (13033232221), we get a palindrome (25256465252).

The spelling of 12223233031 in words is "twelve billion, two hundred twenty-three million, two hundred thirty-three thousand, thirty-one".

Divisors: 1 21001 582031 12223233031