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231005041 = 487474343
BaseRepresentation
bin11011100010011…
…01101101110001
3121002200021100021
431301031231301
5433114130131
634531123441
75503340041
oct1561155561
9532607307
10231005041
1110943a563
1265443581
1338b21897
1422973721
1515430e11
hexdc4db71

231005041 has 4 divisors (see below), whose sum is σ = 231479872. Its totient is φ = 230530212.

The previous prime is 231005011. The next prime is 231005057. The reversal of 231005041 is 140500132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231005041 - 213 = 230996849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231005011) 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, 236685 + ... + 237658.

It is an arithmetic number, because the mean of its divisors is an integer number (57869968).

Almost surely, 2231005041 is an apocalyptic number.

It is an amenable number.

231005041 is a deficient number, since it is larger than the sum of its proper divisors (474831).

231005041 is an equidigital number, since it uses as much as digits as its factorization.

231005041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474830.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 231005041 is about 15198.8499893906. The cubic root of 231005041 is about 613.5837072136.

Adding to 231005041 its reverse (140500132), we get a palindrome (371505173).

The spelling of 231005041 in words is "two hundred thirty-one million, five thousand, forty-one".

Divisors: 1 487 474343 231005041