Base | Representation |
---|---|
bin | 10101100010101110… |
… | …100001101000011110 |
3 | 2012201001102201012020 |
4 | 111202232201220132 |
5 | 334333041400110 |
6 | 14343141521010 |
7 | 1446132645651 |
oct | 254256415036 |
9 | 65631381166 |
10 | 23131200030 |
11 | 989aa60a44 |
12 | 4596713166 |
13 | 2248307c13 |
14 | 11960c1898 |
15 | 905ac8d70 |
hex | 562ba1a1e |
23131200030 has 16 divisors (see below), whose sum is σ = 55514880144. Its totient is φ = 6168320000.
The previous prime is 23131200019. The next prime is 23131200143. The reversal of 23131200030 is 3000213132.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a junction number, because it is equal to n+sod(n) for n = 23131199982 and 23131200009.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385519971 + ... + 385520030.
It is an arithmetic number, because the mean of its divisors is an integer number (3469680009).
Almost surely, 223131200030 is an apocalyptic number.
23131200030 is an abundant number, since it is smaller than the sum of its proper divisors (32383680114).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23131200030 is a wasteful number, since it uses less digits than its factorization.
23131200030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 771040011.
The product of its (nonzero) digits is 108, while the sum is 15.
Adding to 23131200030 its reverse (3000213132), we get a palindrome (26131413162).
The spelling of 23131200030 in words is "twenty-three billion, one hundred thirty-one million, two hundred thousand, thirty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.076 sec. • engine limits •