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230140331 = 1912112649
BaseRepresentation
bin11011011011110…
…10100110101011
3121001001100011222
431231322212223
5432403442311
634500412255
75463106031
oct1555724653
9531040158
10230140331
111089a9923
12650a708b
13388ab115
14227ca551
151530eadb
hexdb7a9ab

230140331 has 4 divisors (see below), whose sum is σ = 242253000. Its totient is φ = 218027664.

The previous prime is 230140327. The next prime is 230140349. The reversal of 230140331 is 133041032.

It is a happy number.

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 230140331 - 22 = 230140327 is a prime.

It is a super-2 number, since 2×2301403312 = 105929143905579122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230140321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6056306 + ... + 6056343.

It is an arithmetic number, because the mean of its divisors is an integer number (60563250).

Almost surely, 2230140331 is an apocalyptic number.

230140331 is a deficient number, since it is larger than the sum of its proper divisors (12112669).

230140331 is a wasteful number, since it uses less digits than its factorization.

230140331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12112668.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 230140331 is about 15170.3767586702. The cubic root of 230140331 is about 612.8171505376.

Adding to 230140331 its reverse (133041032), we get a palindrome (363181363).

The spelling of 230140331 in words is "two hundred thirty million, one hundred forty thousand, three hundred thirty-one".

Divisors: 1 19 12112649 230140331