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231003313 is a prime number
BaseRepresentation
bin11011100010011…
…01010010110001
3121002200011222021
431301031102301
5433114101223
634531111441
75503332022
oct1561152261
9532604867
10231003313
11109439232
1265442581
1338b20b68
1422972c49
151543065d
hexdc4d4b1

231003313 has 2 divisors, whose sum is σ = 231003314. Its totient is φ = 231003312.

The previous prime is 231003287. The next prime is 231003323. The reversal of 231003313 is 313300132.

231003313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230068224 + 935089 = 15168^2 + 967^2 .

It is a cyclic number.

It is not a de Polignac number, because 231003313 - 25 = 231003281 is a prime.

It is not a weakly prime, because it can be changed into another prime (231003323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115501656 + 115501657.

It is an arithmetic number, because the mean of its divisors is an integer number (115501657).

Almost surely, 2231003313 is an apocalyptic number.

It is an amenable number.

231003313 is a deficient number, since it is larger than the sum of its proper divisors (1).

231003313 is an equidigital number, since it uses as much as digits as its factorization.

231003313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 231003313 is about 15198.7931428782. The cubic root of 231003313 is about 613.5821772682.

Adding to 231003313 its reverse (313300132), we get a palindrome (544303445).

The spelling of 231003313 in words is "two hundred thirty-one million, three thousand, three hundred thirteen".