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231003023 = 547422309
BaseRepresentation
bin11011100010011…
…01001110001111
3121002200011120112
431301031032033
5433114044043
634531110235
75503331126
oct1561151617
9532604515
10231003023
11109438a99
126544237b
1338b209a4
1422972abd
1515430518
hexdc4d38f

231003023 has 4 divisors (see below), whose sum is σ = 231425880. Its totient is φ = 230580168.

The previous prime is 231003013. The next prime is 231003037. The reversal of 231003023 is 320300132.

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 231003023 - 212 = 230998927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231002989 and 231003007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231003013) 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, 210608 + ... + 211701.

It is an arithmetic number, because the mean of its divisors is an integer number (57856470).

Almost surely, 2231003023 is an apocalyptic number.

231003023 is a deficient number, since it is larger than the sum of its proper divisors (422857).

231003023 is an equidigital number, since it uses as much as digits as its factorization.

231003023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422856.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 231003023 is about 15198.7836026440. The cubic root of 231003023 is about 613.5819205058.

Adding to 231003023 its reverse (320300132), we get a palindrome (551303155).

The spelling of 231003023 in words is "two hundred thirty-one million, three thousand, twenty-three".

Divisors: 1 547 422309 231003023