21131402413 has 8 divisors (see below), whose sum is σ = 23430348576. Its totient is φ = 18895441200.

The previous prime is 21131402401. The next prime is 21131402423. The reversal of 21131402413 is 31420413112.

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 21131402413 - 2²⁹ = 20594531501 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 (21131402423) 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, 15745531 + ... + 15746872.

It is an arithmetic number, because the mean of its divisors is an integer number (2928793572).

Almost surely, 2^21131402413 is an apocalyptic number.

It is an amenable number.

21131402413 is a deficient number, since it is larger than the sum of its proper divisors (2298946163).

21131402413 is a wasteful number, since it uses less digits than its factorization.

21131402413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31492475.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21131402413 its reverse (31420413112), we get a palindrome (52551815525).

The spelling of 21131402413 in words is "twenty-one billion, one hundred thirty-one million, four hundred two thousand, four hundred thirteen".