21241431341 has 4 divisors (see below), whose sum is σ = 22875387612. Its totient is φ = 19607475072.

The previous prime is 21241431287. The next prime is 21241431359. The reversal of 21241431341 is 14313414212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11359083241 + 9882348100 = 106579^2 + 99410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21241431341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21241431341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241431241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816978116 + ... + 816978141.

It is an arithmetic number, because the mean of its divisors is an integer number (5718846903).

Almost surely, 2^21241431341 is an apocalyptic number.

It is an amenable number.

21241431341 is a deficient number, since it is larger than the sum of its proper divisors (1633956271).

21241431341 is a wasteful number, since it uses less digits than its factorization.

21241431341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633956270.

The product of its digits is 2304, while the sum is 26.

Adding to 21241431341 its reverse (14313414212), we get a palindrome (35554845553).

The spelling of 21241431341 in words is "twenty-one billion, two hundred forty-one million, four hundred thirty-one thousand, three hundred forty-one".