Base | Representation |
---|---|
bin | 111111100000110… |
… | …1100011001011111 |
3 | 12111112010122210110 |
4 | 1333001230121133 |
5 | 13331033303211 |
6 | 551245541103 |
7 | 103545323364 |
oct | 17701543137 |
9 | 5445118713 |
10 | 2131150431 |
11 | 9a3a84953 |
12 | 4b5874793 |
13 | 27c6a6677 |
14 | 16307846b |
15 | c716bea6 |
hex | 7f06c65f |
2131150431 has 16 divisors (see below), whose sum is σ = 2873471328. Its totient is φ = 1404825600.
The previous prime is 2131150381. The next prime is 2131150433. The reversal of 2131150431 is 1340511312.
It is not a de Polignac number, because 2131150431 - 26 = 2131150367 is a prime.
It is a super-2 number, since 2×21311504312 = 9083604319102971522, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 2131150398 and 2131150407.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2131150433) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393361 + ... + 398741.
It is an arithmetic number, because the mean of its divisors is an integer number (179591958).
Almost surely, 22131150431 is an apocalyptic number.
2131150431 is a deficient number, since it is larger than the sum of its proper divisors (742320897).
2131150431 is a wasteful number, since it uses less digits than its factorization.
2131150431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6842.
The product of its (nonzero) digits is 360, while the sum is 21.
The square root of 2131150431 is about 46164.3848762225. The cubic root of 2131150431 is about 1286.8799527480.
Adding to 2131150431 its reverse (1340511312), we get a palindrome (3471661743).
The spelling of 2131150431 in words is "two billion, one hundred thirty-one million, one hundred fifty thousand, four hundred thirty-one".
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