Base | Representation |
---|---|
bin | 111011111000… |
… | …0001001010101 |
3 | 2012001220012022 |
4 | 1313300021111 |
5 | 31014023331 |
6 | 3040502525 |
7 | 530554601 |
oct | 167601125 |
9 | 65056168 |
10 | 31392341 |
11 | 167a1592 |
12 | a61aa45 |
13 | 6671966 |
14 | 4252501 |
15 | 2b5167b |
hex | 1df0255 |
31392341 has 4 divisors (see below), whose sum is σ = 31503552. Its totient is φ = 31281132.
The previous prime is 31392337. The next prime is 31392349. The reversal of 31392341 is 14329313.
It is a happy number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14329313 = 47 ⋅304879.
It is a cyclic number.
It is not a de Polignac number, because 31392341 - 22 = 31392337 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 31392341.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31392349) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55181 + ... + 55746.
It is an arithmetic number, because the mean of its divisors is an integer number (7875888).
Almost surely, 231392341 is an apocalyptic number.
It is an amenable number.
31392341 is a deficient number, since it is larger than the sum of its proper divisors (111211).
31392341 is a wasteful number, since it uses less digits than its factorization.
31392341 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 111210.
The product of its digits is 1944, while the sum is 26.
The square root of 31392341 is about 5602.8868451897. The cubic root of 31392341 is about 315.4577739907.
The spelling of 31392341 in words is "thirty-one million, three hundred ninety-two thousand, three hundred forty-one".
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