21010300331 has 2 divisors, whose sum is σ = 21010300332. Its totient is φ = 21010300330.

The previous prime is 21010300279. The next prime is 21010300369. The reversal of 21010300331 is 13300301012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21010300331 - 2¹⁰ = 21010299307 is a prime.

It is a super-2 number, since 2×21010300331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21010302331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505150165 + 10505150166.

It is an arithmetic number, because the mean of its divisors is an integer number (10505150166).

Almost surely, 2^21010300331 is an apocalyptic number.

21010300331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010300331 is an equidigital number, since it uses as much as digits as its factorization.

21010300331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 21010300331 its reverse (13300301012), we get a palindrome (34310601343).

The spelling of 21010300331 in words is "twenty-one billion, ten million, three hundred thousand, three hundred thirty-one".