21010301331 has 8 divisors (see below), whose sum is σ = 28397485200. Its totient is φ = 13814992512.

The previous prime is 21010301281. The next prime is 21010301357. The reversal of 21010301331 is 13310301012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21010301331 - 2⁶ = 21010301267 is a prime.

It is a super-2 number, since 2×21010301331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21010301331.

It is not an unprimeable number, because it can be changed into a prime (21010301381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47968506 + ... + 47968943.

It is an arithmetic number, because the mean of its divisors is an integer number (3549685650).

Almost surely, 2^21010301331 is an apocalyptic number.

21010301331 is a deficient number, since it is larger than the sum of its proper divisors (7387183869).

21010301331 is an equidigital number, since it uses as much as digits as its factorization.

21010301331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95937525.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21010301331 its reverse (13310301012), we get a palindrome (34320602343).

The spelling of 21010301331 in words is "twenty-one billion, ten million, three hundred one thousand, three hundred thirty-one".