21431213103300 has 288 divisors, whose sum is σ = 83255018671104. Its totient is φ = 4110682176000.

The previous prime is 21431213103257. The next prime is 21431213103301. The reversal of 21431213103300 is 330131213412.

It is not an unprimeable number, because it can be changed into a prime (21431213103301) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 35382706 + ... + 35983305.

Almost surely, 2^{21431213103300} is an apocalyptic number.

21431213103300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21431213103300 is an abundant number, since it is smaller than the sum of its proper divisors (61823805567804).

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

21431213103300 is a wasteful number, since it uses less digits than its factorization.

21431213103300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71366059 (or 71366052 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21431213103300 its reverse (330131213412), we get a palindrome (21761344316712).

The spelling of 21431213103300 in words is "twenty-one trillion, four hundred thirty-one billion, two hundred thirteen million, one hundred three thousand, three hundred".