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22131030013 = 47470872979
BaseRepresentation
bin10100100111000111…
…001011011111111101
32010010100102210212021
4110213013023133331
5330311020430023
614100012440141
71412266436251
oct244707133775
963110383767
1022131030013
119427431454
124357779051
13211903b541
1410dd32c261
15897db235d
hex5271cb7fd

22131030013 has 4 divisors (see below), whose sum is σ = 22601903040. Its totient is φ = 21660156988.

The previous prime is 22131029993. The next prime is 22131030109. The reversal of 22131030013 is 31003013122.

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 22131030013 - 217 = 22130898941 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 (22131030613) 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, 235436443 + ... + 235436536.

It is an arithmetic number, because the mean of its divisors is an integer number (5650475760).

Almost surely, 222131030013 is an apocalyptic number.

It is an amenable number.

22131030013 is a deficient number, since it is larger than the sum of its proper divisors (470873027).

22131030013 is an equidigital number, since it uses as much as digits as its factorization.

22131030013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470873026.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 22131030013 its reverse (31003013122), we get a palindrome (53134043135).

The spelling of 22131030013 in words is "twenty-two billion, one hundred thirty-one million, thirty thousand, thirteen".

Divisors: 1 47 470872979 22131030013