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23123130213 = 38778788723
BaseRepresentation
bin10101100010001111…
…101111011101100101
32012200111020201111010
4111202033233131211
5334324010131323
614342252532433
71446004235541
oct254217573545
965614221433
1023123130213
119896449a77
124593a81119
132246740a91
141194dc0a21
15905032c93
hex5623ef765

23123130213 has 8 divisors (see below), whose sum is σ = 30865998688. Its totient is φ = 15397840944.

The previous prime is 23123130187. The next prime is 23123130269. The reversal of 23123130213 is 31203132132.

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

It is not a de Polignac number, because 23123130213 - 213 = 23123122021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23123130213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123130913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4391731 + ... + 4396992.

It is an arithmetic number, because the mean of its divisors is an integer number (3858249836).

Almost surely, 223123130213 is an apocalyptic number.

It is an amenable number.

23123130213 is a deficient number, since it is larger than the sum of its proper divisors (7742868475).

23123130213 is an equidigital number, since it uses as much as digits as its factorization.

23123130213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8789603.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23123130213 its reverse (31203132132), we get a palindrome (54326262345).

The spelling of 23123130213 in words is "twenty-three billion, one hundred twenty-three million, one hundred thirty thousand, two hundred thirteen".

Divisors: 1 3 877 2631 8788723 26366169 7707710071 23123130213