131023413020 has 24 divisors (see below), whose sum is σ = 278240734800. Its totient is φ = 51820495232.

The previous prime is 131023413019. The next prime is 131023413029. The reversal of 131023413020 is 20314320131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 131023412983 and 131023413001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131023413029) 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 7 ways as a sum of consecutive naturals, for example, 36802550 + ... + 36806109.

It is an arithmetic number, because the mean of its divisors is an integer number (11593363950).

Almost surely, 2^131023413020 is an apocalyptic number.

131023413020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131023413020 is an abundant number, since it is smaller than the sum of its proper divisors (147217321780).

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

131023413020 is a wasteful number, since it uses less digits than its factorization.

131023413020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73608757 (or 73608755 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131023413020 its reverse (20314320131), we get a palindrome (151337733151).

The spelling of 131023413020 in words is "one hundred thirty-one billion, twenty-three million, four hundred thirteen thousand, twenty".