131223110320 has 80 divisors (see below), whose sum is σ = 313405788960. Its totient is φ = 51068731392.

The previous prime is 131223110311. The next prime is 131223110351. The reversal of 131223110320 is 23011322131.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809866 + ... + 958294.

It is an arithmetic number, because the mean of its divisors is an integer number (3917572362).

Almost surely, 2^131223110320 is an apocalyptic number.

131223110320 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 131223110320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156702894480).

131223110320 is an abundant number, since it is smaller than the sum of its proper divisors (182182678640).

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

131223110320 is a wasteful number, since it uses less digits than its factorization.

131223110320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148742 (or 148736 counting only the distinct ones).

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

Adding to 131223110320 its reverse (23011322131), we get a palindrome (154234432451).

The spelling of 131223110320 in words is "one hundred thirty-one billion, two hundred twenty-three million, one hundred ten thousand, three hundred twenty".