21232000331 has 4 divisors (see below), whose sum is σ = 21338694000. Its totient is φ = 21125306664.

The previous prime is 21232000301. The next prime is 21232000351. The reversal of 21232000331 is 13300023212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21232000331 - 2⁶ = 21232000267 is a prime.

It is a super-2 number, since 2×21232000331² (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 (21232000301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53346536 + ... + 53346933.

It is an arithmetic number, because the mean of its divisors is an integer number (5334673500).

Almost surely, 2^21232000331 is an apocalyptic number.

21232000331 is a deficient number, since it is larger than the sum of its proper divisors (106693669).

21232000331 is a wasteful number, since it uses less digits than its factorization.

21232000331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106693668.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21232000331 its reverse (13300023212), we get a palindrome (34532023543).

The spelling of 21232000331 in words is "twenty-one billion, two hundred thirty-two million, three hundred thirty-one", and thus it is an aban number.