20531300024 has 24 divisors (see below), whose sum is σ = 39159777360. Its totient is φ = 10091642256.

The previous prime is 20531300017. The next prime is 20531300077. The reversal of 20531300024 is 42000313502.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20531299969 and 20531300005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 340784 + ... + 396479.

It is an arithmetic number, because the mean of its divisors is an integer number (1631657390).

Almost surely, 2^20531300024 is an apocalyptic number.

It is an amenable number.

20531300024 is a deficient number, since it is larger than the sum of its proper divisors (18628477336).

20531300024 is an equidigital number, since it uses as much as digits as its factorization.

20531300024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737387 (or 737324 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 20531300024 its reverse (42000313502), we get a palindrome (62531613526).

The spelling of 20531300024 in words is "twenty billion, five hundred thirty-one million, three hundred thousand, twenty-four".