20013423102 has 48 divisors (see below), whose sum is σ = 47218626000. Its totient is φ = 6102093312.

The previous prime is 20013423097. The next prime is 20013423103. The reversal of 20013423102 is 20132431002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013423103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 999027 + ... + 1018862.

It is an arithmetic number, because the mean of its divisors is an integer number (983721375).

Almost surely, 2^20013423102 is an apocalyptic number.

20013423102 is an abundant number, since it is smaller than the sum of its proper divisors (27205202898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20013423102 is a wasteful number, since it uses less digits than its factorization.

20013423102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017945 (or 2017942 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20013423102 its reverse (20132431002), we get a palindrome (40145854104).

The spelling of 20013423102 in words is "twenty billion, thirteen million, four hundred twenty-three thousand, one hundred two".