21131014413 has 16 divisors (see below), whose sum is σ = 28220897600. Its totient is φ = 14064261120.

The previous prime is 21131014409. The next prime is 21131014451. The reversal of 21131014413 is 31441013112.

It is not a de Polignac number, because 21131014413 - 2² = 21131014409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21131014413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131014403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7856973 + ... + 7859661.

It is an arithmetic number, because the mean of its divisors is an integer number (1763806100).

Almost surely, 2^21131014413 is an apocalyptic number.

It is an amenable number.

21131014413 is a deficient number, since it is larger than the sum of its proper divisors (7089883187).

21131014413 is a wasteful number, since it uses less digits than its factorization.

21131014413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6012.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21131014413 its reverse (31441013112), we get a palindrome (52572027525).

The spelling of 21131014413 in words is "twenty-one billion, one hundred thirty-one million, fourteen thousand, four hundred thirteen".