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23240331 = 33860753
BaseRepresentation
bin101100010100…
…1111010001011
31121201201202000
41120221322023
521422142311
62150042043
7401353032
oct130517213
947651660
1023240331
1112133894
127949323
134a7929a
14312d719
152091056
hex1629e8b

23240331 has 8 divisors (see below), whose sum is σ = 34430160. Its totient is φ = 15493536.

The previous prime is 23240291. The next prime is 23240381. The reversal of 23240331 is 13304232.

23240331 is a `hidden beast` number, since 232 + 403 + 31 = 666.

It is not a de Polignac number, because 23240331 - 29 = 23239819 is a prime.

It is a super-2 number, since 2×232403312 = 1080225969979122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23240381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430350 + ... + 430403.

It is an arithmetic number, because the mean of its divisors is an integer number (4303770).

Almost surely, 223240331 is an apocalyptic number.

23240331 is a deficient number, since it is larger than the sum of its proper divisors (11189829).

23240331 is an equidigital number, since it uses as much as digits as its factorization.

23240331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860762 (or 860756 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 23240331 is about 4820.8226476401. The cubic root of 23240331 is about 285.3738031380.

Adding to 23240331 its reverse (13304232), we get a palindrome (36544563).

The spelling of 23240331 in words is "twenty-three million, two hundred forty thousand, three hundred thirty-one".

Divisors: 1 3 9 27 860753 2582259 7746777 23240331