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226131371 = 769294059
BaseRepresentation
bin11010111101001…
…11110110101011
3120202111122220222
431132213312223
5430342200441
634234440255
75414041064
oct1536476653
9522448828
10226131371
11106710934
126389308b
1337b0645b
142206556b
1514cbbd4b
hexd7a7dab

226131371 has 4 divisors (see below), whose sum is σ = 226426200. Its totient is φ = 225836544.

The previous prime is 226131361. The next prime is 226131401. The reversal of 226131371 is 173131622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 173131622 = 286565811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-226131371 is a prime.

It is a super-2 number, since 2×2261313712 = 102270793900679282, 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 226131371.

It is not an unprimeable number, because it can be changed into a prime (226131361) 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 3 ways as a sum of consecutive naturals, for example, 146261 + ... + 147798.

It is an arithmetic number, because the mean of its divisors is an integer number (56606550).

Almost surely, 2226131371 is an apocalyptic number.

226131371 is a deficient number, since it is larger than the sum of its proper divisors (294829).

226131371 is an equidigital number, since it uses as much as digits as its factorization.

226131371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294828.

The product of its digits is 1512, while the sum is 26.

The square root of 226131371 is about 15037.6650780631. The cubic root of 226131371 is about 609.2379366545.

Adding to 226131371 its reverse (173131622), we get a palindrome (399262993).

The spelling of 226131371 in words is "two hundred twenty-six million, one hundred thirty-one thousand, three hundred seventy-one".

Divisors: 1 769 294059 226131371