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230151331 = 1511524181
BaseRepresentation
bin11011011011111…
…01010010100011
3121001001220021101
431231331102203
5432404320311
634500535231
75463153064
oct1555752243
9531056241
10230151331
11108a07113
12650b1517
13388b3127
14227d056b
1515312ec1
hexdb7d4a3

230151331 has 4 divisors (see below), whose sum is σ = 231675664. Its totient is φ = 228627000.

The previous prime is 230151319. The next prime is 230151373. The reversal of 230151331 is 133151032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230151331 - 27 = 230151203 is a prime.

It is a super-2 number, since 2×2301513312 = 105939270322143122, 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 = 230151299 and 230151308.

It is not an unprimeable number, because it can be changed into a prime (230151391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761940 + ... + 762241.

It is an arithmetic number, because the mean of its divisors is an integer number (57918916).

Almost surely, 2230151331 is an apocalyptic number.

230151331 is a deficient number, since it is larger than the sum of its proper divisors (1524333).

230151331 is a wasteful number, since it uses less digits than its factorization.

230151331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524332.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 230151331 is about 15170.7393030135. The cubic root of 230151331 is about 612.8269139737.

The spelling of 230151331 in words is "two hundred thirty million, one hundred fifty-one thousand, three hundred thirty-one".

Divisors: 1 151 1524181 230151331