Search a number
-
+
2231200131 = 31444951473
BaseRepresentation
bin1000010011111101…
…0110100110000011
312202111101201011220
42010333112212003
514032141401011
61005222210123
7106201613436
oct20477264603
95674351156
102231200131
11a454aa756
12523283943
13297336984
1417247d81d
15d0d31506
hex84fd6983

2231200131 has 8 divisors (see below), whose sum is σ = 2975197200. Its totient is φ = 1487334912.

The previous prime is 2231200087. The next prime is 2231200141. The reversal of 2231200131 is 1310021322.

2231200131 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2231200131 - 213 = 2231191939 is a prime.

It is a super-3 number, since 3×22312001313 (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2231200131.

It is not an unprimeable number, because it can be changed into a prime (2231200141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17611 + ... + 69083.

It is an arithmetic number, because the mean of its divisors is an integer number (371899650).

Almost surely, 22231200131 is an apocalyptic number.

2231200131 is a deficient number, since it is larger than the sum of its proper divisors (743997069).

2231200131 is a wasteful number, since it uses less digits than its factorization.

2231200131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65925.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2231200131 is about 47235.5811968054. The cubic root of 2231200131 is about 1306.7108852941.

Adding to 2231200131 its reverse (1310021322), we get a palindrome (3541221453).

The spelling of 2231200131 in words is "two billion, two hundred thirty-one million, two hundred thousand, one hundred thirty-one".

Divisors: 1 3 14449 43347 51473 154419 743733377 2231200131