21311341232 has 40 divisors (see below), whose sum is σ = 41493518352. Its totient is φ = 10603443200.

The previous prime is 21311341231. The next prime is 21311341237. The reversal of 21311341232 is 23214311312.

It is a junction number, because it is equal to n+sod(n) for n = 21311341198 and 21311341207.

It is not an unprimeable number, because it can be changed into a prime (21311341231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3850307 + ... + 3855837.

Almost surely, 2^21311341232 is an apocalyptic number.

It is an amenable number.

21311341232 is a deficient number, since it is larger than the sum of its proper divisors (20182177120).

21311341232 is a wasteful number, since it uses less digits than its factorization.

21311341232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6677 (or 6671 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 21311341232 its reverse (23214311312), we get a palindrome (44525652544).

The spelling of 21311341232 in words is "twenty-one billion, three hundred eleven million, three hundred forty-one thousand, two hundred thirty-two".