131102232020 has 24 divisors (see below), whose sum is σ = 275504489568. Its totient is φ = 52404740000.

The previous prime is 131102232013. The next prime is 131102232047. The reversal of 131102232020 is 20232201131.

It is a self number, because there is not a number n which added to its sum of digits gives 131102232020.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2229806 + ... + 2287845.

It is an arithmetic number, because the mean of its divisors is an integer number (11479353732).

Almost surely, 2^131102232020 is an apocalyptic number.

131102232020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131102232020 is an abundant number, since it is smaller than the sum of its proper divisors (144402257548).

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

131102232020 is a wasteful number, since it uses less digits than its factorization.

131102232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4519111 (or 4519109 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 131102232020 its reverse (20232201131), we get a palindrome (151334433151).

The spelling of 131102232020 in words is "one hundred thirty-one billion, one hundred two million, two hundred thirty-two thousand, twenty".