21343200444231 has 16 divisors (see below), whose sum is σ = 28902070775808. Its totient is φ = 14007171578400.

The previous prime is 21343200444193. The next prime is 21343200444259. The reversal of 21343200444231 is 13244400234312.

It is not a de Polignac number, because 21343200444231 - 2¹³ = 21343200436039 is a prime.

It is a super-2 number, since 2×21343200444231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21343200444192 and 21343200444201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343200444271) 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, 75655591 + ... + 75937176.

It is an arithmetic number, because the mean of its divisors is an integer number (1806379423488).

Almost surely, 2^{21343200444231} is an apocalyptic number.

21343200444231 is a deficient number, since it is larger than the sum of its proper divisors (7558870331577).

21343200444231 is a wasteful number, since it uses less digits than its factorization.

21343200444231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151593502.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 21343200444231 its reverse (13244400234312), we get a palindrome (34587600678543).

The spelling of 21343200444231 in words is "twenty-one trillion, three hundred forty-three billion, two hundred million, four hundred forty-four thousand, two hundred thirty-one".