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230421101 = 1280917989
BaseRepresentation
bin11011011101111…
…11001001101101
3121001120121022212
431232333021231
5432441433401
634510420205
75465355431
oct1556771155
9531517285
10230421101
11109080869
1265201665
1338978b61
14228609c1
1515367dbb
hexdbbf26d

230421101 has 4 divisors (see below), whose sum is σ = 230451900. Its totient is φ = 230390304.

The previous prime is 230421091. The next prime is 230421131. The reversal of 230421101 is 101124032.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 126585001 + 103836100 = 11251^2 + 10190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230421101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230421131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3815 + ... + 21803.

It is an arithmetic number, because the mean of its divisors is an integer number (57612975).

Almost surely, 2230421101 is an apocalyptic number.

It is an amenable number.

230421101 is a deficient number, since it is larger than the sum of its proper divisors (30799).

230421101 is a wasteful number, since it uses less digits than its factorization.

230421101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30798.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 230421101 is about 15179.6278281123. The cubic root of 230421101 is about 613.0662605002.

Adding to 230421101 its reverse (101124032), we get a palindrome (331545133).

The spelling of 230421101 in words is "two hundred thirty million, four hundred twenty-one thousand, one hundred one".

Divisors: 1 12809 17989 230421101