21411424331 has 8 divisors (see below), whose sum is σ = 23359136304. Its totient is φ = 19463915520.

The previous prime is 21411424319. The next prime is 21411424357. The reversal of 21411424331 is 13342411412.

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 21411424331 - 2¹⁴ = 21411407947 is a prime.

It is a super-2 number, since 2×21411424331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21411424331.

It is not an unprimeable number, because it can be changed into a prime (21411424381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243995 + ... + 319931.

It is an arithmetic number, because the mean of its divisors is an integer number (2919892038).

Almost surely, 2^21411424331 is an apocalyptic number.

21411424331 is a deficient number, since it is larger than the sum of its proper divisors (1947711973).

21411424331 is a wasteful number, since it uses less digits than its factorization.

21411424331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101581.

The product of its digits is 2304, while the sum is 26.

Adding to 21411424331 its reverse (13342411412), we get a palindrome (34753835743).

The spelling of 21411424331 in words is "twenty-one billion, four hundred eleven million, four hundred twenty-four thousand, three hundred thirty-one".