20352000531 has 4 divisors (see below), whose sum is σ = 27136000712. Its totient is φ = 13568000352.

The previous prime is 20352000527. The next prime is 20352000563. The reversal of 20352000531 is 13500025302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20352000531 - 2² = 20352000527 is a prime.

It is a super-2 number, since 2×20352000531² (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 = 20352000498 and 20352000507.

It is not an unprimeable number, because it can be changed into a prime (20352000521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3392000086 + ... + 3392000091.

It is an arithmetic number, because the mean of its divisors is an integer number (6784000178).

Almost surely, 2^20352000531 is an apocalyptic number.

20352000531 is a deficient number, since it is larger than the sum of its proper divisors (6784000181).

20352000531 is an equidigital number, since it uses as much as digits as its factorization.

20352000531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6784000180.

The product of its (nonzero) digits is 900, while the sum is 21.

Adding to 20352000531 its reverse (13500025302), we get a palindrome (33852025833).

The spelling of 20352000531 in words is "twenty billion, three hundred fifty-two million, five hundred thirty-one", and thus it is an aban number.