21412411531 has 8 divisors (see below), whose sum is σ = 24815994624. Its totient is φ = 18094995240.

The previous prime is 21412411529. The next prime is 21412411541. The reversal of 21412411531 is 13511421412.

It is a happy number.

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

It is not a de Polignac number, because 21412411531 - 2¹ = 21412411529 is a prime.

It is a super-2 number, since 2×21412411531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21412411496 and 21412411505.

It is not an unprimeable number, because it can be changed into a prime (21412411541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21541165 + ... + 21542158.

It is an arithmetic number, because the mean of its divisors is an integer number (3101999328).

Almost surely, 2^21412411531 is an apocalyptic number.

21412411531 is a deficient number, since it is larger than the sum of its proper divisors (3403583093).

21412411531 is an equidigital number, since it uses as much as digits as its factorization.

21412411531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43083401.

The product of its digits is 960, while the sum is 25.

Adding to 21412411531 its reverse (13511421412), we get a palindrome (34923832943).

The spelling of 21412411531 in words is "twenty-one billion, four hundred twelve million, four hundred eleven thousand, five hundred thirty-one".