21431413210 has 64 divisors (see below), whose sum is σ = 40327372800. Its totient is φ = 8191008000.

The previous prime is 21431413181. The next prime is 21431413217. The reversal of 21431413210 is 1231413412.

It is not an unprimeable number, because it can be changed into a prime (21431413217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14996776 + ... + 14998204.

It is an arithmetic number, because the mean of its divisors is an integer number (630115200).

Almost surely, 2^21431413210 is an apocalyptic number.

21431413210 is a deficient number, since it is larger than the sum of its proper divisors (18895959590).

21431413210 is a wasteful number, since it uses less digits than its factorization.

21431413210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21431413210 its reverse (1231413412), we get a palindrome (22662826622).

The spelling of 21431413210 in words is "twenty-one billion, four hundred thirty-one million, four hundred thirteen thousand, two hundred ten".