Base | Representation |
---|---|
bin | 11101011111100… |
… | …01111000110011 |
3 | 122020112112102001 |
4 | 32233301320303 |
5 | 1001313444011 |
6 | 40314434431 |
7 | 6062626450 |
oct | 1657617063 |
9 | 566475361 |
10 | 247406131 |
11 | 117721985 |
12 | 6aa32a17 |
13 | 3c344b7b |
14 | 24c02827 |
15 | 16ac07c1 |
hex | ebf1e33 |
247406131 has 4 divisors (see below), whose sum is σ = 282749872. Its totient is φ = 212062392.
The previous prime is 247406113. The next prime is 247406141. The reversal of 247406131 is 131604742.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 247406131 - 25 = 247406099 is a prime.
It is a super-2 number, since 2×2474061312 = 122419587312778322, which contains 22 as substring.
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 247406131.
It is not an unprimeable number, because it can be changed into a prime (247406111) 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, 17671860 + ... + 17671873.
It is an arithmetic number, because the mean of its divisors is an integer number (70687468).
Almost surely, 2247406131 is an apocalyptic number.
247406131 is a deficient number, since it is larger than the sum of its proper divisors (35343741).
247406131 is an equidigital number, since it uses as much as digits as its factorization.
247406131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 35343740.
The product of its (nonzero) digits is 4032, while the sum is 28.
The square root of 247406131 is about 15729.1490869659. The cubic root of 247406131 is about 627.7742327126.
The spelling of 247406131 in words is "two hundred forty-seven million, four hundred six thousand, one hundred thirty-one".
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