Base | Representation |
---|---|
bin | 10010101011110100… |
… | …00111000011111111 |
3 | 221220002112100022122 |
4 | 21111322013003333 |
5 | 131020443344411 |
6 | 4335220033155 |
7 | 503404026050 |
oct | 112572070377 |
9 | 27802470278 |
10 | 10031231231 |
11 | 428840654a |
12 | 1b3b5327bb |
13 | c3b3039a8 |
14 | 6b2372727 |
15 | 3da9cb9db |
hex | 255e870ff |
10031231231 has 8 divisors (see below), whose sum is σ = 11481304224. Its totient is φ = 8585418240.
The previous prime is 10031231219. The next prime is 10031231233. The reversal of 10031231231 is 13213213001.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 10031231231 - 210 = 10031230207 is a prime.
It is a super-2 number, since 2×100312312312 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (10031231233) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059950 + ... + 1069371.
It is an arithmetic number, because the mean of its divisors is an integer number (1435163028).
Almost surely, 210031231231 is an apocalyptic number.
10031231231 is a deficient number, since it is larger than the sum of its proper divisors (1450072993).
10031231231 is an equidigital number, since it uses as much as digits as its factorization.
10031231231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2130001.
The product of its (nonzero) digits is 108, while the sum is 17.
Adding to 10031231231 its reverse (13213213001), we get a palindrome (23244444232).
The spelling of 10031231231 in words is "ten billion, thirty-one million, two hundred thirty-one thousand, two hundred thirty-one".
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