21031413414 has 48 divisors (see below), whose sum is σ = 46286553600. Its totient is φ = 6365959600.

The previous prime is 21031413401. The next prime is 21031413419. The reversal of 21031413414 is 41431413012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031413419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 645487 + ... + 677285.

It is an arithmetic number, because the mean of its divisors is an integer number (964303200).

Almost surely, 2^21031413414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21031413414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23143276800).

21031413414 is an abundant number, since it is smaller than the sum of its proper divisors (25255140186).

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

21031413414 is a wasteful number, since it uses less digits than its factorization.

21031413414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32737 (or 32726 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21031413414 its reverse (41431413012), we get a palindrome (62462826426).

The spelling of 21031413414 in words is "twenty-one billion, thirty-one million, four hundred thirteen thousand, four hundred fourteen".