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23312030213 = 231013566531
BaseRepresentation
bin10101101101100000…
…010101101000000101
32020011122200211120102
4111231200111220011
5340220334431323
614413121413445
71453456662443
oct255540255005
966148624512
1023312030213
11998304037a
12462719a285
13227690c924
1411b2113b93
159168e8328
hex56d815a05

23312030213 has 4 divisors (see below), whose sum is σ = 24325596768. Its totient is φ = 22298463660.

The previous prime is 23312030201. The next prime is 23312030237. The reversal of 23312030213 is 31203021332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23312030213 - 216 = 23311964677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312030293) 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, 506783243 + ... + 506783288.

It is an arithmetic number, because the mean of its divisors is an integer number (6081399192).

Almost surely, 223312030213 is an apocalyptic number.

23312030213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23312030213 is a deficient number, since it is larger than the sum of its proper divisors (1013566555).

23312030213 is a wasteful number, since it uses less digits than its factorization.

23312030213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013566554.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23312030213 its reverse (31203021332), we get a palindrome (54515051545).

The spelling of 23312030213 in words is "twenty-three billion, three hundred twelve million, thirty thousand, two hundred thirteen".

Divisors: 1 23 1013566531 23312030213