20243500531 has 8 divisors (see below), whose sum is σ = 21183501600. Its totient is φ = 19308486912.

The previous prime is 20243500507. The next prime is 20243500549. The reversal of 20243500531 is 13500534202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20243500531 - 2⁹ = 20243500019 is a prime.

It is a super-2 number, since 2×20243500531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20243500496 and 20243500505.

It is not an unprimeable number, because it can be changed into a prime (20243500631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238556 + ... + 1254793.

It is an arithmetic number, because the mean of its divisors is an integer number (2647937700).

Almost surely, 2^20243500531 is an apocalyptic number.

20243500531 is a deficient number, since it is larger than the sum of its proper divisors (940001069).

20243500531 is a wasteful number, since it uses less digits than its factorization.

20243500531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493725.

The product of its (nonzero) digits is 3600, while the sum is 25.

The spelling of 20243500531 in words is "twenty billion, two hundred forty-three million, five hundred thousand, five hundred thirty-one".