Base | Representation |
---|---|
bin | 10101011110001… |
… | …11000110101111 |
3 | 110112221010222100 |
4 | 22233013012233 |
5 | 332102401111 |
6 | 25512350143 |
7 | 4315004055 |
oct | 1257070657 |
9 | 415833870 |
10 | 180122031 |
11 | 92746391 |
12 | 503a5353 |
13 | 2b4175ab |
14 | 19cca1d5 |
15 | 10c2e756 |
hex | abc71af |
180122031 has 12 divisors (see below), whose sum is σ = 267208552. Its totient is φ = 116835696.
The previous prime is 180122017. The next prime is 180122053. The reversal of 180122031 is 130221081.
It is not a de Polignac number, because 180122031 - 218 = 179859887 is a prime.
It is a super-2 number, since 2×1801220312 = 64887892103129922, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 180121995 and 180122013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (180122231) by changing a digit.
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 11 ways as a sum of consecutive naturals, for example, 270121 + ... + 270786.
Almost surely, 2180122031 is an apocalyptic number.
180122031 is a deficient number, since it is larger than the sum of its proper divisors (87086521).
180122031 is a wasteful number, since it uses less digits than its factorization.
180122031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 540950 (or 540947 counting only the distinct ones).
The product of its (nonzero) digits is 96, while the sum is 18.
The square root of 180122031 is about 13420.9549213161. The cubic root of 180122031 is about 564.7491835803.
It can be divided in two parts, 1801 and 22031, that added together give a palindrome (23832).
The spelling of 180122031 in words is "one hundred eighty million, one hundred twenty-two thousand, thirty-one".
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