Base | Representation |
---|---|
bin | 10101100010101110… |
… | …100001101011010101 |
3 | 2012201001102201110000 |
4 | 111202232201223111 |
5 | 334333041401323 |
6 | 14343141521513 |
7 | 1446132646332 |
oct | 254256415325 |
9 | 65631381400 |
10 | 23131200213 |
11 | 989aa610a0 |
12 | 4596713299 |
13 | 2248308024 |
14 | 11960c1989 |
15 | 905ac8e43 |
hex | 562ba1ad5 |
23131200213 has 40 divisors (see below), whose sum is σ = 37885003200. Its totient is φ = 13948355520.
The previous prime is 23131200199. The next prime is 23131200217. The reversal of 23131200213 is 31200213132.
It is not a de Polignac number, because 23131200213 - 29 = 23131199701 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23131200217) by changing a digit.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 112081 + ... + 242537.
It is an arithmetic number, because the mean of its divisors is an integer number (947125080).
Almost surely, 223131200213 is an apocalyptic number.
It is an amenable number.
23131200213 is a deficient number, since it is larger than the sum of its proper divisors (14753802987).
23131200213 is a wasteful number, since it uses less digits than its factorization.
23131200213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 130679 (or 130670 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 18.
Adding to 23131200213 its reverse (31200213132), we get a palindrome (54331413345).
The spelling of 23131200213 in words is "twenty-three billion, one hundred thirty-one million, two hundred thousand, two hundred thirteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.082 sec. • engine limits •