21411431332 has 24 divisors (see below), whose sum is σ = 37621544576. Its totient is φ = 10662474528.

The previous prime is 21411431299. The next prime is 21411431359. The reversal of 21411431332 is 23313411412.

It is a junction number, because it is equal to n+sod(n) for n = 21411431297 and 21411431306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1741318 + ... + 1753570.

Almost surely, 2^21411431332 is an apocalyptic number.

It is an amenable number.

21411431332 is a deficient number, since it is larger than the sum of its proper divisors (16210113244).

21411431332 is a wasteful number, since it uses less digits than its factorization.

21411431332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13987 (or 13985 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

Adding to 21411431332 its reverse (23313411412), we get a palindrome (44724842744).

The spelling of 21411431332 in words is "twenty-one billion, four hundred eleven million, four hundred thirty-one thousand, three hundred thirty-two".