20023013102 has 4 divisors (see below), whose sum is σ = 30034519656. Its totient is φ = 10011506550.

The previous prime is 20023013071. The next prime is 20023013107. The reversal of 20023013102 is 20131032002.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023013107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005753274 + ... + 5005753277.

It is an arithmetic number, because the mean of its divisors is an integer number (7508629914).

Almost surely, 2^20023013102 is an apocalyptic number.

20023013102 is a deficient number, since it is larger than the sum of its proper divisors (10011506554).

20023013102 is a wasteful number, since it uses less digits than its factorization.

20023013102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011506553.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20023013102 its reverse (20131032002), we get a palindrome (40154045104).

The spelling of 20023013102 in words is "twenty billion, twenty-three million, thirteen thousand, one hundred two".