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230013131 = 443519217
BaseRepresentation
bin11011011010110…
…11100011001011
3121000210212200212
431231123203023
5432340410011
634453551335
75462036135
oct1555334313
9530725625
10230013131
111089222a7
126504554b
133886525a
1422796055
15152d708b
hexdb5b8cb

230013131 has 4 divisors (see below), whose sum is σ = 230532792. Its totient is φ = 229493472.

The previous prime is 230013101. The next prime is 230013139. The reversal of 230013131 is 131310032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230013131 - 26 = 230013067 is a prime.

It is a super-2 number, since 2×2300131312 = 105812080864846322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230013139) 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 3 ways as a sum of consecutive naturals, for example, 259166 + ... + 260051.

It is an arithmetic number, because the mean of its divisors is an integer number (57633198).

Almost surely, 2230013131 is an apocalyptic number.

230013131 is a deficient number, since it is larger than the sum of its proper divisors (519661).

230013131 is an equidigital number, since it uses as much as digits as its factorization.

230013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519660.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 230013131 is about 15166.1837981741. The cubic root of 230013131 is about 612.7042271069.

Adding to 230013131 its reverse (131310032), we get a palindrome (361323163).

The spelling of 230013131 in words is "two hundred thirty million, thirteen thousand, one hundred thirty-one".

Divisors: 1 443 519217 230013131