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230331331 = 284381017
BaseRepresentation
bin11011011101010…
…01001111000011
3121001102001012001
431232221033003
5432431100311
634504444431
75464532626
oct1556511703
9531361161
10230331331
1110901a37a
1265179717
1338947039
1422839dbd
151534b4c1
hexdba93c3

230331331 has 4 divisors (see below), whose sum is σ = 230415192. Its totient is φ = 230247472.

The previous prime is 230331289. The next prime is 230331341. The reversal of 230331331 is 133133032.

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 230331331 - 29 = 230330819 is a prime.

It is a super-2 number, since 2×2303313312 = 106105044080463122, 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 = 230331299 and 230331308.

It is not an unprimeable number, because it can be changed into a prime (230331341) 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, 37666 + ... + 43351.

It is an arithmetic number, because the mean of its divisors is an integer number (57603798).

Almost surely, 2230331331 is an apocalyptic number.

230331331 is a deficient number, since it is larger than the sum of its proper divisors (83861).

230331331 is an equidigital number, since it uses as much as digits as its factorization.

230331331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83860.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 230331331 is about 15176.6706164429. The cubic root of 230331331 is about 612.9866351149.

Adding to 230331331 its reverse (133133032), we get a palindrome (363464363).

The spelling of 230331331 in words is "two hundred thirty million, three hundred thirty-one thousand, three hundred thirty-one".

Divisors: 1 2843 81017 230331331