Base | Representation |
---|---|
bin | 111011111100… |
… | …0001000010001 |
3 | 2012010120001102 |
4 | 1313320020101 |
5 | 31021100131 |
6 | 3041314145 |
7 | 531052124 |
oct | 167701021 |
9 | 65116042 |
10 | 31425041 |
11 | 1681410a |
12 | a635955 |
13 | 66837cb |
14 | 42603bb |
15 | 2b5b1cb |
hex | 1df8211 |
31425041 has 4 divisors (see below), whose sum is σ = 32438784. Its totient is φ = 30411300.
The previous prime is 31425029. The next prime is 31425047. The reversal of 31425041 is 14052413.
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.
It is a cyclic number.
It is not a de Polignac number, because 31425041 - 26 = 31424977 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (31425047) 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, 506825 + ... + 506886.
It is an arithmetic number, because the mean of its divisors is an integer number (8109696).
Almost surely, 231425041 is an apocalyptic number.
31425041 is a gapful number since it is divisible by the number (31) formed by its first and last digit.
It is an amenable number.
31425041 is a deficient number, since it is larger than the sum of its proper divisors (1013743).
31425041 is a wasteful number, since it uses less digits than its factorization.
31425041 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1013742.
The product of its (nonzero) digits is 480, while the sum is 20.
The square root of 31425041 is about 5605.8042241948. The cubic root of 31425041 is about 315.5672687404.
Adding to 31425041 its reverse (14052413), we get a palindrome (45477454).
The spelling of 31425041 in words is "thirty-one million, four hundred twenty-five thousand, forty-one".
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