21411431000 has 32 divisors (see below), whose sum is σ = 50102750880. Its totient is φ = 8564572000.

The previous prime is 21411430991. The next prime is 21411431011. The reversal of 21411431000 is 13411412.

It is a happy number.

It is a super-2 number, since 2×21411431000² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21411431000.

It is a congruent number.

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, 10704716 + ... + 10706715.

It is an arithmetic number, because the mean of its divisors is an integer number (1565710965).

Almost surely, 2^21411431000 is an apocalyptic number.

21411431000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21411431000 is an abundant number, since it is smaller than the sum of its proper divisors (28691319880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21411431000 is a wasteful number, since it uses less digits than its factorization.

21411431000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21411452 (or 21411438 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21411431000 its reverse (13411412), we get a palindrome (21424842412).

The spelling of 21411431000 in words is "twenty-one billion, four hundred eleven million, four hundred thirty-one thousand".