131223013120 has 72 divisors (see below), whose sum is σ = 314844964560. Its totient is φ = 52401561600.

The previous prime is 131223013111. The next prime is 131223013147. The reversal of 131223013120 is 21310322131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683991 + ... + 854569.

It is an arithmetic number, because the mean of its divisors is an integer number (4372846730).

Almost surely, 2^131223013120 is an apocalyptic number.

131223013120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131223013120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157422482280).

131223013120 is an abundant number, since it is smaller than the sum of its proper divisors (183621951440).

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

131223013120 is an equidigital number, since it uses as much as digits as its factorization.

131223013120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171201 (or 171187 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131223013120 its reverse (21310322131), we get a palindrome (152533335251).

The spelling of 131223013120 in words is "one hundred thirty-one billion, two hundred twenty-three million, thirteen thousand, one hundred twenty".