21233010313 has 2 divisors, whose sum is σ = 21233010314. Its totient is φ = 21233010312.

The previous prime is 21233010289. The next prime is 21233010317. The reversal of 21233010313 is 31301033212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10801860624 + 10431149689 = 103932^2 + 102133^2 .

It is a cyclic number.

It is not a de Polignac number, because 21233010313 - 2²⁵ = 21199455881 is a prime.

It is not a weakly prime, because it can be changed into another prime (21233010317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616505156 + 10616505157.

It is an arithmetic number, because the mean of its divisors is an integer number (10616505157).

Almost surely, 2^21233010313 is an apocalyptic number.

It is an amenable number.

21233010313 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233010313 is an equidigital number, since it uses as much as digits as its factorization.

21233010313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21233010313 its reverse (31301033212), we get a palindrome (52534043525).

The spelling of 21233010313 in words is "twenty-one billion, two hundred thirty-three million, ten thousand, three hundred thirteen".