131025323520 has 1280 divisors, whose sum is σ = 589342279680. Its totient is φ = 26849968128.

The previous prime is 131025323437. The next prime is 131025323567. The reversal of 131025323520 is 25323520131.

It is a happy number.

131025323520 is a `hidden beast` number, since 1 + 3 + 102 + 5 + 32 + 3 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 232726759 + ... + 232727321.

It is an arithmetic number, because the mean of its divisors is an integer number (460423656).

Almost surely, 2^131025323520 is an apocalyptic number.

131025323520 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 131025323520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294671139840).

131025323520 is an abundant number, since it is smaller than the sum of its proper divisors (458316956160).

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

131025323520 is a wasteful number, since it uses less digits than its factorization.

131025323520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 131025323520 its reverse (25323520131), we get a palindrome (156348843651).

The spelling of 131025323520 in words is "one hundred thirty-one billion, twenty-five million, three hundred twenty-three thousand, five hundred twenty".