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3144311225 = 521129394271
BaseRepresentation
bin1011101101101010…
…0110000110111001
322010010120120010022
42323122212012321
522414420424400
61240001300225
7140630130056
oct27332460671
98103516108
103144311225
111373977620
12739034675
133b1570cb3
1421b85002d
1513609cb85
hexbb6a61b9

3144311225 has 24 divisors (see below), whose sum is σ = 4400075520. Its totient is φ = 2207912000.

The previous prime is 3144311213. The next prime is 3144311227. The reversal of 3144311225 is 5221134413.

It is a happy number.

It is not a de Polignac number, because 3144311225 - 214 = 3144294841 is a prime.

It is a super-2 number, since 2×31443112252 = 19773386159322001250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3144311194 and 3144311203.

It is not an unprimeable number, because it can be changed into a prime (3144311227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189161 + ... + 205110.

It is an arithmetic number, because the mean of its divisors is an integer number (183336480).

Almost surely, 23144311225 is an apocalyptic number.

It is an amenable number.

3144311225 is a deficient number, since it is larger than the sum of its proper divisors (1255764295).

3144311225 is a wasteful number, since it uses less digits than its factorization.

3144311225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394321 (or 394316 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 3144311225 is about 56074.1582638563. The cubic root of 3144311225 is about 1465.0142263914.

Adding to 3144311225 its reverse (5221134413), we get a palindrome (8365445638).

The spelling of 3144311225 in words is "three billion, one hundred forty-four million, three hundred eleven thousand, two hundred twenty-five".

Divisors: 1 5 11 25 29 55 145 275 319 725 1595 7975 394271 1971355 4336981 9856775 11433859 21684905 57169295 108424525 125772449 285846475 628862245 3144311225