20004241531 has 2 divisors, whose sum is σ = 20004241532. Its totient is φ = 20004241530.

The previous prime is 20004241529. The next prime is 20004241589. The reversal of 20004241531 is 13514240002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20004241531 - 2¹ = 20004241529 is a prime.

It is a super-2 number, since 2×20004241531² (a number of 21 digits) contains 22 as substring.

Together with 20004241529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20004248531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002120765 + 10002120766.

It is an arithmetic number, because the mean of its divisors is an integer number (10002120766).

Almost surely, 2^20004241531 is an apocalyptic number.

20004241531 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004241531 is an equidigital number, since it uses as much as digits as its factorization.

20004241531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20004241531 its reverse (13514240002), we get a palindrome (33518481533).

The spelling of 20004241531 in words is "twenty billion, four million, two hundred forty-one thousand, five hundred thirty-one".