21131402414 has 8 divisors (see below), whose sum is σ = 31765565280. Its totient is φ = 10542880656.

The previous prime is 21131402401. The next prime is 21131402423. The reversal of 21131402414 is 41420413112.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21131402414.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11409119 + ... + 11410970.

It is an arithmetic number, because the mean of its divisors is an integer number (3970695660).

Almost surely, 2^21131402414 is an apocalyptic number.

21131402414 is a deficient number, since it is larger than the sum of its proper divisors (10634162866).

21131402414 is a wasteful number, since it uses less digits than its factorization.

21131402414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22820554.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21131402414 its reverse (41420413112), we get a palindrome (62551815526).

The spelling of 21131402414 in words is "twenty-one billion, one hundred thirty-one million, four hundred two thousand, four hundred fourteen".