20131020052 has 24 divisors (see below), whose sum is σ = 41388252192. Its totient is φ = 8446581600.

The previous prime is 20131020031. The next prime is 20131020053. The reversal of 20131020052 is 25002013102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131020053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17596474 + ... + 17597617.

It is an arithmetic number, because the mean of its divisors is an integer number (1724510508).

Almost surely, 2^20131020052 is an apocalyptic number.

20131020052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20131020052 is an abundant number, since it is smaller than the sum of its proper divisors (21257232140).

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

20131020052 is a wasteful number, since it uses less digits than its factorization.

20131020052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35194119 (or 35194117 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 20131020052 its reverse (25002013102), we get a palindrome (45133033154).

The spelling of 20131020052 in words is "twenty billion, one hundred thirty-one million, twenty thousand, fifty-two".