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230530151 = 1193919309
BaseRepresentation
bin11011011110110…
…01110001100111
3121001210010220202
431233121301213
5433003431101
634513021115
75466321365
oct1557316147
9531703822
10230530151
11109145795
126525479b
13389b6697
142288c635
151538a36b
hexdbd9c67

230530151 has 4 divisors (see below), whose sum is σ = 230561400. Its totient is φ = 230498904.

The previous prime is 230530147. The next prime is 230530189. The reversal of 230530151 is 151035032.

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 230530151 - 22 = 230530147 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 (230530121) 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, 2285 + ... + 21593.

It is an arithmetic number, because the mean of its divisors is an integer number (57640350).

Almost surely, 2230530151 is an apocalyptic number.

230530151 is a deficient number, since it is larger than the sum of its proper divisors (31249).

230530151 is a wasteful number, since it uses less digits than its factorization.

230530151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31248.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 230530151 is about 15183.2193885223. The cubic root of 230530151 is about 613.1629593001.

Adding to 230530151 its reverse (151035032), we get a palindrome (381565183).

The spelling of 230530151 in words is "two hundred thirty million, five hundred thirty thousand, one hundred fifty-one".

Divisors: 1 11939 19309 230530151