21230010331 has 16 divisors (see below), whose sum is σ = 22178016000. Its totient is φ = 20304222048.

The previous prime is 21230010313. The next prime is 21230010341. The reversal of 21230010331 is 13301003212.

It is a cyclic number.

It is not a de Polignac number, because 21230010331 - 2¹⁵ = 21229977563 is a prime.

It is a super-2 number, since 2×21230010331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21230010301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 593760 + ... + 628498.

It is an arithmetic number, because the mean of its divisors is an integer number (1386126000).

Almost surely, 2^21230010331 is an apocalyptic number.

21230010331 is a deficient number, since it is larger than the sum of its proper divisors (948005669).

21230010331 is a wasteful number, since it uses less digits than its factorization.

21230010331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35058.

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

Adding to 21230010331 its reverse (13301003212), we get a palindrome (34531013543).

The spelling of 21230010331 in words is "twenty-one billion, two hundred thirty million, ten thousand, three hundred thirty-one".