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23000199131 = 7213269134227
BaseRepresentation
bin10101011010111010…
…110010111111011011
32012100220221011202002
4111122322302333123
5334101022333011
614322142031215
71442652316100
oct253272627733
965326834662
1023000199131
119833016038
12455a87850b
13222712b9b0
141182940aa7
158e934dc3b
hex55aeb2fdb

23000199131 has 24 divisors (see below), whose sum is σ = 28920764880. Its totient is φ = 18130174272.

The previous prime is 23000199083. The next prime is 23000199137. The reversal of 23000199131 is 13199100032.

It is not a de Polignac number, because 23000199131 - 210 = 23000198107 is a prime.

It is a super-2 number, since 2×230001991312 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23000199094 and 23000199103.

It is not an unprimeable number, because it can be changed into a prime (23000199137) 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 23 ways as a sum of consecutive naturals, for example, 104240 + ... + 238466.

It is an arithmetic number, because the mean of its divisors is an integer number (1205031870).

Almost surely, 223000199131 is an apocalyptic number.

23000199131 is a deficient number, since it is larger than the sum of its proper divisors (5920565749).

23000199131 is a wasteful number, since it uses less digits than its factorization.

23000199131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134523 (or 134516 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 29.

Adding to 23000199131 its reverse (13199100032), we get a palindrome (36199299163).

The spelling of 23000199131 in words is "twenty-three billion, one hundred ninety-nine thousand, one hundred thirty-one".

Divisors: 1 7 13 49 91 269 637 1883 3497 13181 24479 134227 171353 939589 1744951 6577123 12214657 36107063 85502599 252749441 469391819 1769246087 3285742733 23000199131