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231014405 = 5211218971
BaseRepresentation
bin11011100010100…
…00000000000101
3121002200202012002
431301100000011
5433114430110
634531235045
75503406246
oct1561200005
9532622162
10231014405
111094465a6
1265448a85
1338b25c1b
1422976ccd
1515433aa5
hexdc50005

231014405 has 8 divisors (see below), whose sum is σ = 278532384. Its totient is φ = 183934800.

The previous prime is 231014401. The next prime is 231014419. The reversal of 231014405 is 504410132.

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

It is not a de Polignac number, because 231014405 - 22 = 231014401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231014401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108431 + ... + 110540.

It is an arithmetic number, because the mean of its divisors is an integer number (34816548).

Almost surely, 2231014405 is an apocalyptic number.

It is an amenable number.

231014405 is a deficient number, since it is larger than the sum of its proper divisors (47517979).

231014405 is a wasteful number, since it uses less digits than its factorization.

231014405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219187.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 231014405 is about 15199.1580358913. The cubic root of 231014405 is about 613.5919978266.

Adding to 231014405 its reverse (504410132), we get a palindrome (735424537).

The spelling of 231014405 in words is "two hundred thirty-one million, fourteen thousand, four hundred five".

Divisors: 1 5 211 1055 218971 1094855 46202881 231014405