21131441413 has 8 divisors (see below), whose sum is σ = 22245033920. Its totient is φ = 20017990080.

The previous prime is 21131441411. The next prime is 21131441417. The reversal of 21131441413 is 31414413112.

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

It is a cyclic number.

It is not a de Polignac number, because 21131441413 - 2¹ = 21131441411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131441411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428056 + ... + 474862.

It is an arithmetic number, because the mean of its divisors is an integer number (2780629240).

Almost surely, 2^21131441413 is an apocalyptic number.

It is an amenable number.

21131441413 is a deficient number, since it is larger than the sum of its proper divisors (1113592507).

21131441413 is a wasteful number, since it uses less digits than its factorization.

21131441413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70587.

The product of its digits is 1152, while the sum is 25.

Adding to 21131441413 its reverse (31414413112), we get a palindrome (52545854525).

The spelling of 21131441413 in words is "twenty-one billion, one hundred thirty-one million, four hundred forty-one thousand, four hundred thirteen".