20023103530501 has 4 divisors (see below), whose sum is σ = 20027134762272. Its totient is φ = 20019072298732.

The previous prime is 20023103530459. The next prime is 20023103530517. The reversal of 20023103530501 is 10503530132002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20023103530501 is a prime.

It is a super-2 number, since 2×20023103530501² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023103530601) 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, 2015608435 + ... + 2015618368.

It is an arithmetic number, because the mean of its divisors is an integer number (5006783690568).

Almost surely, 2^{20023103530501} is an apocalyptic number.

It is an amenable number.

20023103530501 is a deficient number, since it is larger than the sum of its proper divisors (4031231771).

20023103530501 is an equidigital number, since it uses as much as digits as its factorization.

20023103530501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031231770.

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 20023103530501 its reverse (10503530132002), we get a palindrome (30526633662503).

The spelling of 20023103530501 in words is "twenty trillion, twenty-three billion, one hundred three million, five hundred thirty thousand, five hundred one".