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2231133031 = 67229145417
BaseRepresentation
bin1000010011111100…
…0110001101100111
312202111021022010201
42010333012031213
514032132224111
61005220531331
7106201214011
oct20477061547
95674238121
102231133031
11a454642a6
12523250b47
1329731227a
141724631b1
15d0d1b6c1
hex84fc6367

2231133031 has 8 divisors (see below), whose sum is σ = 2274337520. Its totient is φ = 2188219968.

The previous prime is 2231133019. The next prime is 2231133071. The reversal of 2231133031 is 1303311322.

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

It is a cyclic number.

It is not a de Polignac number, because 2231133031 - 25 = 2231132999 is a prime.

It is a super-3 number, since 3×22311330313 (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231133071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57366 + ... + 88051.

It is an arithmetic number, because the mean of its divisors is an integer number (284292190).

Almost surely, 22231133031 is an apocalyptic number.

2231133031 is a deficient number, since it is larger than the sum of its proper divisors (43204489).

2231133031 is a wasteful number, since it uses less digits than its factorization.

2231133031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145713.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2231133031 is about 47234.8709218095. The cubic root of 2231133031 is about 1306.6977860390.

Adding to 2231133031 its reverse (1303311322), we get a palindrome (3534444353).

The spelling of 2231133031 in words is "two billion, two hundred thirty-one million, one hundred thirty-three thousand, thirty-one".

Divisors: 1 67 229 15343 145417 9742939 33300493 2231133031