20541031433 has 4 divisors (see below), whose sum is σ = 22121110788. Its totient is φ = 18960952080.

The previous prime is 20541031417. The next prime is 20541031451. The reversal of 20541031433 is 33413014502.

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 1049241664 + 19491789769 = 32392^2 + 139613^2 .

It is a cyclic number.

It is not a de Polignac number, because 20541031433 - 2⁴ = 20541031417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20541031463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790039658 + ... + 790039683.

It is an arithmetic number, because the mean of its divisors is an integer number (5530277697).

Almost surely, 2^20541031433 is an apocalyptic number.

It is an amenable number.

20541031433 is a deficient number, since it is larger than the sum of its proper divisors (1580079355).

20541031433 is a wasteful number, since it uses less digits than its factorization.

20541031433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580079354.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 20541031433 its reverse (33413014502), we get a palindrome (53954045935).

The spelling of 20541031433 in words is "twenty billion, five hundred forty-one million, thirty-one thousand, four hundred thirty-three".