Base | Representation |
---|---|
bin | 10010101001111001… |
… | …010001010111011111 |
3 | 1220200221102012210121 |
4 | 102221321101113133 |
5 | 312010214411111 |
6 | 13111325215411 |
7 | 1306240106635 |
oct | 225171212737 |
9 | 56627365717 |
10 | 20030232031 |
11 | 85495a8877 |
12 | 3a70101567 |
13 | 1b72a31404 |
14 | d80315355 |
15 | 7c373d871 |
hex | 4a9e515df |
20030232031 has 8 divisors (see below), whose sum is σ = 21210154560. Its totient is φ = 18850495488.
The previous prime is 20030231987. The next prime is 20030232037. The reversal of 20030232031 is 13023203002.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 20030232031 - 223 = 20021843423 is a prime.
It is a super-2 number, since 2×200302320312 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 20030231996 and 20030232014.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20030232037) 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, 218410 + ... + 296248.
It is an arithmetic number, because the mean of its divisors is an integer number (2651269320).
Almost surely, 220030232031 is an apocalyptic number.
20030232031 is a deficient number, since it is larger than the sum of its proper divisors (1179922529).
20030232031 is a wasteful number, since it uses less digits than its factorization.
20030232031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 92993.
The product of its (nonzero) digits is 216, while the sum is 16.
Adding to 20030232031 its reverse (13023203002), we get a palindrome (33053435033).
The spelling of 20030232031 in words is "twenty billion, thirty million, two hundred thirty-two thousand, thirty-one".
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