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23211313 is a prime number
BaseRepresentation
bin101100010001…
…0110100110001
31121200020221021
41120202310301
521420230223
62145255441
7401202316
oct130426461
947606837
1023211313
1112114004
127934581
134a69008
143122d0d
15208765d
hex1622d31

23211313 has 2 divisors, whose sum is σ = 23211314. Its totient is φ = 23211312.

The previous prime is 23211311. The next prime is 23211319. The reversal of 23211313 is 31311232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16744464 + 6466849 = 4092^2 + 2543^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211313 - 21 = 23211311 is a prime.

Together with 23211311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23211311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605656 + 11605657.

It is an arithmetic number, because the mean of its divisors is an integer number (11605657).

Almost surely, 223211313 is an apocalyptic number.

It is an amenable number.

23211313 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211313 is an equidigital number, since it uses as much as digits as its factorization.

23211313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 16.

The square root of 23211313 is about 4817.8120552799. The cubic root of 23211313 is about 285.2549805910.

Adding to 23211313 its reverse (31311232), we get a palindrome (54522545).

The spelling of 23211313 in words is "twenty-three million, two hundred eleven thousand, three hundred thirteen".