131120023122 has 48 divisors (see below), whose sum is σ = 316514120832. Its totient is φ = 38887947360.

The previous prime is 131120023121. The next prime is 131120023127. The reversal of 131120023122 is 221320021131.

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

It is a junction number, because it is equal to n+sod(n) for n = 131120023095 and 131120023104.

It is not an unprimeable number, because it can be changed into a prime (131120023121) 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, 7035613 + ... + 7054224.

It is an arithmetic number, because the mean of its divisors is an integer number (6594044184).

Almost surely, 2^131120023122 is an apocalyptic number.

131120023122 is an abundant number, since it is smaller than the sum of its proper divisors (185394097710).

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

131120023122 is a wasteful number, since it uses less digits than its factorization.

131120023122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14089903 (or 14089900 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 131120023122 its reverse (221320021131), we get a palindrome (352440044253).

The spelling of 131120023122 in words is "one hundred thirty-one billion, one hundred twenty million, twenty-three thousand, one hundred twenty-two".