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22431000023 = 91124622393
BaseRepresentation
bin10100111000111111…
…011110010111010111
32010220020212212100122
4110320333132113113
5331414314000043
614145450102155
71422601232345
oct247077362727
963806785318
1022431000023
119570795353
12442011a95b
1321662287a3
14112b0d4995
158b43b7368
hex538fde5d7

22431000023 has 4 divisors (see below), whose sum is σ = 22455623328. Its totient is φ = 22406376720.

The previous prime is 22431000017. The next prime is 22431000041. The reversal of 22431000023 is 32000013422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22431000023 - 220 = 22429951447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22430999965 and 22431000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431000073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12310286 + ... + 12312107.

It is an arithmetic number, because the mean of its divisors is an integer number (5613905832).

Almost surely, 222431000023 is an apocalyptic number.

22431000023 is a deficient number, since it is larger than the sum of its proper divisors (24623305).

22431000023 is an equidigital number, since it uses as much as digits as its factorization.

22431000023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24623304.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 22431000023 its reverse (32000013422), we get a palindrome (54431013445).

The spelling of 22431000023 in words is "twenty-two billion, four hundred thirty-one million, twenty-three", and thus it is an aban number.

Divisors: 1 911 24622393 22431000023