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230204431 = 1149720023
BaseRepresentation
bin11011011100010…
…10010000001111
3121001011121010001
431232022100033
5432413020211
634502025131
75463463642
oct1556122017
9531147101
10230204431
11108a42aa6
12651181a7
1338901352
1422805a59
1515323ac1
hexdb8a40f

230204431 has 4 divisors (see below), whose sum is σ = 230235952. Its totient is φ = 230172912.

The previous prime is 230204393. The next prime is 230204441. The reversal of 230204431 is 134402032.

230204431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 is a cyclic number.

It is not a de Polignac number, because 230204431 - 227 = 95986703 is a prime.

It is a super-2 number, since 2×2302044312 = 105988160104067522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230204399 and 230204408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230204441) 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, 1486 + ... + 21508.

It is an arithmetic number, because the mean of its divisors is an integer number (57558988).

Almost surely, 2230204431 is an apocalyptic number.

230204431 is a deficient number, since it is larger than the sum of its proper divisors (31521).

230204431 is a wasteful number, since it uses less digits than its factorization.

230204431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31520.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 230204431 is about 15172.4892815912. The cubic root of 230204431 is about 612.8740403677.

Adding to 230204431 its reverse (134402032), we get a palindrome (364606463).

The spelling of 230204431 in words is "two hundred thirty million, two hundred four thousand, four hundred thirty-one".

Divisors: 1 11497 20023 230204431