20131132441 has 4 divisors (see below), whose sum is σ = 23007008512. Its totient is φ = 17255256372.

The previous prime is 20131132423. The next prime is 20131132451. The reversal of 20131132441 is 14423113102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20131132441 - 2⁹ = 20131131929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20131132451) 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, 1437938025 + ... + 1437938038.

It is an arithmetic number, because the mean of its divisors is an integer number (5751752128).

Almost surely, 2^20131132441 is an apocalyptic number.

It is an amenable number.

20131132441 is a deficient number, since it is larger than the sum of its proper divisors (2875876071).

20131132441 is an equidigital number, since it uses as much as digits as its factorization.

20131132441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875876070.

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

Adding to 20131132441 its reverse (14423113102), we get a palindrome (34554245543).

The spelling of 20131132441 in words is "twenty billion, one hundred thirty-one million, one hundred thirty-two thousand, four hundred forty-one".