20523241503 has 12 divisors (see below), whose sum is σ = 29649111960. Its totient is φ = 13680116496.

The previous prime is 20523241499. The next prime is 20523241553. The reversal of 20523241503 is 30514232502.

It is a happy number.

It is not a de Polignac number, because 20523241503 - 2² = 20523241499 is a prime.

It is a super-3 number, since 3×20523241503³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20523241553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105501 + ... + 228422.

It is an arithmetic number, because the mean of its divisors is an integer number (2470759330).

Almost surely, 2^20523241503 is an apocalyptic number.

20523241503 is a deficient number, since it is larger than the sum of its proper divisors (9125870457).

20523241503 is a wasteful number, since it uses less digits than its factorization.

20523241503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340758 (or 340755 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Subtracting 20523241503 from its reverse (30514232502), we obtain a palindrome (9990990999).

The spelling of 20523241503 in words is "twenty billion, five hundred twenty-three million, two hundred forty-one thousand, five hundred three".