21320200031231 has 8 divisors (see below), whose sum is σ = 21413090183184. Its totient is φ = 21227372968000.

The previous prime is 21320200031191. The next prime is 21320200031233. The reversal of 21320200031231 is 13213000202312.

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

It is a cyclic number.

It is not a de Polignac number, because 21320200031231 - 2¹⁴ = 21320200014847 is a prime.

It is a super-2 number, since 2×21320200031231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320200031233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15094766 + ... + 16446651.

It is an arithmetic number, because the mean of its divisors is an integer number (2676636272898).

Almost surely, 2^{21320200031231} is an apocalyptic number.

21320200031231 is a deficient number, since it is larger than the sum of its proper divisors (92890151953).

21320200031231 is a wasteful number, since it uses less digits than its factorization.

21320200031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31544361.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21320200031231 its reverse (13213000202312), we get a palindrome (34533200233543).

The spelling of 21320200031231 in words is "twenty-one trillion, three hundred twenty billion, two hundred million, thirty-one thousand, two hundred thirty-one".