21332031310 has 16 divisors (see below), whose sum is σ = 40418586000. Its totient is φ = 8083717056.

The previous prime is 21332031269. The next prime is 21332031317. The reversal of 21332031310 is 1313023312.

It is a super-2 number, since 2×21332031310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332031317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56136735 + ... + 56137114.

It is an arithmetic number, because the mean of its divisors is an integer number (2526161625).

Almost surely, 2^21332031310 is an apocalyptic number.

21332031310 is a deficient number, since it is larger than the sum of its proper divisors (19086554690).

21332031310 is a wasteful number, since it uses less digits than its factorization.

21332031310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112273875.

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

Adding to 21332031310 its reverse (1313023312), we get a palindrome (22645054622).

The spelling of 21332031310 in words is "twenty-one billion, three hundred thirty-two million, thirty-one thousand, three hundred ten".