Base | Representation |
---|---|
bin | 101100000111… |
… | …1001110011110 |
3 | 1121112011211010 |
4 | 1120033032132 |
5 | 21410143123 |
6 | 2143440050 |
7 | 400416300 |
oct | 130171636 |
9 | 47464733 |
10 | 23131038 |
11 | 12069767 |
12 | 78b6026 |
13 | 4a3b608 |
14 | 3101970 |
15 | 206d993 |
hex | 160f39e |
23131038 has 48 divisors (see below), whose sum is σ = 55691280. Its totient is φ = 6378624.
The previous prime is 23131027. The next prime is 23131057. The reversal of 23131038 is 83013132.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7170 + ... + 9882.
It is an arithmetic number, because the mean of its divisors is an integer number (1160235).
Almost surely, 223131038 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 23131038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27845640).
23131038 is an abundant number, since it is smaller than the sum of its proper divisors (32560242).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23131038 is a wasteful number, since it uses less digits than its factorization.
23131038 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2761 (or 2754 counting only the distinct ones).
The product of its (nonzero) digits is 432, while the sum is 21.
The square root of 23131038 is about 4809.4737757888. The cubic root of 23131038 is about 284.9257547444.
The spelling of 23131038 in words is "twenty-three million, one hundred thirty-one thousand, thirty-eight".
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