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23313130129 = 129717974657
BaseRepresentation
bin10101101101100100…
…100010001010010001
32020011201202201101001
4111231210202022101
5340221130131004
614413201142001
71453502223262
oct255544421221
966151681331
1023313130129
1199837217a3
12462762a901
132276c06473
1411b231c969
15916a641a4
hex56d922291

23313130129 has 4 divisors (see below), whose sum is σ = 23331106084. Its totient is φ = 23295154176.

The previous prime is 23313130117. The next prime is 23313130133. The reversal of 23313130129 is 92103131332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21714969600 + 1598160529 = 147360^2 + 39977^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23313130129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23313130097 and 23313130106.

It is not an unprimeable number, because it can be changed into a prime (23313130109) 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, 8986032 + ... + 8988625.

It is an arithmetic number, because the mean of its divisors is an integer number (5832776521).

Almost surely, 223313130129 is an apocalyptic number.

It is an amenable number.

23313130129 is a deficient number, since it is larger than the sum of its proper divisors (17975955).

23313130129 is a wasteful number, since it uses less digits than its factorization.

23313130129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17975954.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 23313130129 in words is "twenty-three billion, three hundred thirteen million, one hundred thirty thousand, one hundred twenty-nine".

Divisors: 1 1297 17974657 23313130129