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230031313 is a prime number
BaseRepresentation
bin11011011010111…
…11111111010001
3121000211210122021
431231133333101
5432342000223
634454211441
75462143141
oct1555377721
9530753567
10230031313
11108934a26
1265053b81
1338870605
142279c921
15152dc65d
hexdb5ffd1

230031313 has 2 divisors, whose sum is σ = 230031314. Its totient is φ = 230031312.

The previous prime is 230031299. The next prime is 230031341. The reversal of 230031313 is 313130032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115605504 + 114425809 = 10752^2 + 10697^2 .

It is a cyclic number.

It is not a de Polignac number, because 230031313 - 25 = 230031281 is a prime.

It is not a weakly prime, because it can be changed into another prime (230031343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115015656 + 115015657.

It is an arithmetic number, because the mean of its divisors is an integer number (115015657).

Almost surely, 2230031313 is an apocalyptic number.

It is an amenable number.

230031313 is a deficient number, since it is larger than the sum of its proper divisors (1).

230031313 is an equidigital number, since it uses as much as digits as its factorization.

230031313 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 230031313 is about 15166.7832120064. The cubic root of 230031313 is about 612.7203709602.

Adding to 230031313 its reverse (313130032), we get a palindrome (543161345).

The spelling of 230031313 in words is "two hundred thirty million, thirty-one thousand, three hundred thirteen".