20441232131 has 2 divisors, whose sum is σ = 20441232132. Its totient is φ = 20441232130.

The previous prime is 20441232127. The next prime is 20441232169. The reversal of 20441232131 is 13123214402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20441232131 - 2² = 20441232127 is a prime.

It is a super-2 number, since 2×20441232131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20441232097 and 20441232106.

It is not a weakly prime, because it can be changed into another prime (20441232101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220616065 + 10220616066.

It is an arithmetic number, because the mean of its divisors is an integer number (10220616066).

Almost surely, 2^20441232131 is an apocalyptic number.

20441232131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20441232131 is an equidigital number, since it uses as much as digits as its factorization.

20441232131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20441232131 its reverse (13123214402), we get a palindrome (33564446533).

The spelling of 20441232131 in words is "twenty billion, four hundred forty-one million, two hundred thirty-two thousand, one hundred thirty-one".