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22030131 = 319138447
BaseRepresentation
bin101010000001…
…0011100110011
31112110020122210
41110002130303
521114431011
62104103203
7355152534
oct124023463
945406583
1022030131
1111487622
127464b03
1347444a6
142cd668b
151e026a6
hex1502733

22030131 has 8 divisors (see below), whose sum is σ = 29528064. Its totient is φ = 14609480.

The previous prime is 22030121. The next prime is 22030153. The reversal of 22030131 is 13103022.

Added to its reverse (13103022) it gives a triangular number (35133153 = T8382).

It is a happy number.

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 22030131 - 29 = 22029619 is a prime.

It is a super-2 number, since 2×220301312 = 970653343754322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22030121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18651 + ... + 19796.

It is an arithmetic number, because the mean of its divisors is an integer number (3691008).

Almost surely, 222030131 is an apocalyptic number.

22030131 is a deficient number, since it is larger than the sum of its proper divisors (7497933).

22030131 is a wasteful number, since it uses less digits than its factorization.

22030131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38641.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 22030131 is about 4693.6266361951. The cubic root of 22030131 is about 280.3317962963.

Adding to 22030131 its reverse (13103022), we get a palindrome (35133153).

The spelling of 22030131 in words is "twenty-two million, thirty thousand, one hundred thirty-one".

Divisors: 1 3 191 573 38447 115341 7343377 22030131