131311223132320 has 384 divisors, whose sum is σ = 390679788280320. Its totient is φ = 40515264184320.

The previous prime is 131311223132317. The next prime is 131311223132359. The reversal of 131311223132320 is 23231322113131.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1473094792 + ... + 1473183928.

It is an arithmetic number, because the mean of its divisors is an integer number (1017395281980).

Almost surely, 2^{131311223132320} is an apocalyptic number.

131311223132320 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 131311223132320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195339894140160).

131311223132320 is an abundant number, since it is smaller than the sum of its proper divisors (259368565148000).

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

131311223132320 is a wasteful number, since it uses less digits than its factorization.

131311223132320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90376 (or 90368 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 131311223132320 its reverse (23231322113131), we get a palindrome (154542545245451).

The spelling of 131311223132320 in words is "one hundred thirty-one trillion, three hundred eleven billion, two hundred twenty-three million, one hundred thirty-two thousand, three hundred twenty".