21300131234 has 8 divisors (see below), whose sum is σ = 31956500268. Its totient is φ = 10647964480.

The previous prime is 21300131233. The next prime is 21300131239. The reversal of 21300131234 is 43213100312.

It can be written as a sum of positive squares in 2 ways, for example, as 19894256209 + 1405875025 = 141047^2 + 37495^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21300131233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1037867 + ... + 1058190.

Almost surely, 2^21300131234 is an apocalyptic number.

21300131234 is a deficient number, since it is larger than the sum of its proper divisors (10656369034).

21300131234 is a wasteful number, since it uses less digits than its factorization.

21300131234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101140.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21300131234 its reverse (43213100312), we get a palindrome (64513231546).

The spelling of 21300131234 in words is "twenty-one billion, three hundred million, one hundred thirty-one thousand, two hundred thirty-four".