Base | Representation |
---|---|
bin | 1110010100100… |
… | …01000110111111 |
3 | 22101001100011111 |
4 | 13022101012333 |
5 | 221223211111 |
6 | 15530502451 |
7 | 2656051105 |
oct | 712210677 |
9 | 271040144 |
10 | 120132031 |
11 | 618a1a78 |
12 | 34294a27 |
13 | 1bb72056 |
14 | 11d51c75 |
15 | a82ea21 |
hex | 72911bf |
120132031 has 4 divisors (see below), whose sum is σ = 120225952. Its totient is φ = 120038112.
The previous prime is 120132029. The next prime is 120132043. The reversal of 120132031 is 130231021.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130231021 = 883 ⋅147487.
It is a cyclic number.
It is not a de Polignac number, because 120132031 - 21 = 120132029 is a prime.
It is a super-2 number, since 2×1201320312 = 28863409744369922, which 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 (120132631) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45015 + ... + 47608.
It is an arithmetic number, because the mean of its divisors is an integer number (30056488).
Almost surely, 2120132031 is an apocalyptic number.
120132031 is a deficient number, since it is larger than the sum of its proper divisors (93921).
120132031 is an equidigital number, since it uses as much as digits as its factorization.
120132031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 93920.
The product of its (nonzero) digits is 36, while the sum is 13.
The square root of 120132031 is about 10960.4758564581. The cubic root of 120132031 is about 493.4232465875.
Adding to 120132031 its reverse (130231021), we get a palindrome (250363052).
The spelling of 120132031 in words is "one hundred twenty million, one hundred thirty-two thousand, thirty-one".
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