21301323414 has 48 divisors (see below), whose sum is σ = 49665535488. Its totient is φ = 6072908688.

The previous prime is 21301323389. The next prime is 21301323473. The reversal of 21301323414 is 41432310312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57879 + ... + 214365.

It is an arithmetic number, because the mean of its divisors is an integer number (1034698656).

Almost surely, 2^21301323414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21301323414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24832767744).

21301323414 is an abundant number, since it is smaller than the sum of its proper divisors (28364212074).

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

21301323414 is a wasteful number, since it uses less digits than its factorization.

21301323414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156969 (or 156962 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21301323414 its reverse (41432310312), we get a palindrome (62733633726).

The spelling of 21301323414 in words is "twenty-one billion, three hundred one million, three hundred twenty-three thousand, four hundred fourteen".