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230323031 = 1731331347
BaseRepresentation
bin11011011101001…
…11001101010111
3121001101121210122
431232213031113
5432430314111
634504342155
75464466501
oct1556471527
9531347718
10230323031
11109014114
126517495b
1338943323
1422836d71
1515348cdb
hexdba7357

230323031 has 4 divisors (see below), whose sum is σ = 231654552. Its totient is φ = 228991512.

The previous prime is 230322991. The next prime is 230323057. The reversal of 230323031 is 130323032.

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 230323031 - 210 = 230322007 is a prime.

It is a super-2 number, since 2×2303230312 = 106097397218053922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230323061) 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, 665501 + ... + 665846.

It is an arithmetic number, because the mean of its divisors is an integer number (57913638).

Almost surely, 2230323031 is an apocalyptic number.

230323031 is a deficient number, since it is larger than the sum of its proper divisors (1331521).

230323031 is a wasteful number, since it uses less digits than its factorization.

230323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331520.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 230323031 is about 15176.3971679711. The cubic root of 230323031 is about 612.9792720261.

Adding to 230323031 its reverse (130323032), we get a palindrome (360646063).

Subtracting from 230323031 its reverse (130323032), we obtain a palindrome (99999999).

The spelling of 230323031 in words is "two hundred thirty million, three hundred twenty-three thousand, thirty-one".

Divisors: 1 173 1331347 230323031