20321303541 has 16 divisors (see below), whose sum is σ = 33780868608. Its totient is φ = 10556521200.

The previous prime is 20321303539. The next prime is 20321303557. The reversal of 20321303541 is 14530312302.

It is not a de Polignac number, because 20321303541 - 2¹ = 20321303539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321303581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43985275 + ... + 43985736.

It is an arithmetic number, because the mean of its divisors is an integer number (2111304288).

Almost surely, 2^20321303541 is an apocalyptic number.

20321303541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20321303541 is a deficient number, since it is larger than the sum of its proper divisors (13459565067).

20321303541 is a wasteful number, since it uses less digits than its factorization.

20321303541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87971032.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 20321303541 its reverse (14530312302), we get a palindrome (34851615843).

The spelling of 20321303541 in words is "twenty billion, three hundred twenty-one million, three hundred three thousand, five hundred forty-one".