Base | Representation |
---|---|
bin | 100110011111101110111 |
3 | 2101002100200 |
4 | 10303331313 |
5 | 310331211 |
6 | 43011543 |
7 | 13502433 |
oct | 4637567 |
9 | 2332320 |
10 | 1261431 |
11 | 791806 |
12 | 509bb3 |
13 | 352212 |
14 | 24b9c3 |
15 | 19db56 |
hex | 133f77 |
1261431 has 6 divisors (see below), whose sum is σ = 1822080. Its totient is φ = 840948.
The previous prime is 1261427. The next prime is 1261459. The reversal of 1261431 is 1341621.
It is a happy number.
It is not a de Polignac number, because 1261431 - 22 = 1261427 is a prime.
It is a super-2 number, since 2×12614312 = 3182416335522, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1261411) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70071 + ... + 70088.
It is an arithmetic number, because the mean of its divisors is an integer number (303680).
21261431 is an apocalyptic number.
1261431 is a deficient number, since it is larger than the sum of its proper divisors (560649).
1261431 is a wasteful number, since it uses less digits than its factorization.
1261431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 140165 (or 140162 counting only the distinct ones).
The product of its digits is 144, while the sum is 18.
The square root of 1261431 is about 1123.1344532156. The cubic root of 1261431 is about 108.0491031858.
The spelling of 1261431 in words is "one million, two hundred sixty-one thousand, four hundred thirty-one".
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