131230125720 has 576 divisors, whose sum is σ = 476992825920. Its totient is φ = 31223267328.

The previous prime is 131230125707. The next prime is 131230125749. The reversal of 131230125720 is 27521032131.

131230125720 is a `hidden beast` number, since 1 + 312 + 301 + 25 + 7 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 413975002 + ... + 413975318.

It is an arithmetic number, because the mean of its divisors is an integer number (828112545).

Almost surely, 2^131230125720 is an apocalyptic number.

131230125720 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 131230125720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238496412960).

131230125720 is an abundant number, since it is smaller than the sum of its proper divisors (345762700200).

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

131230125720 is a wasteful number, since it uses less digits than its factorization.

131230125720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

Adding to 131230125720 its reverse (27521032131), we get a palindrome (158751157851).

The spelling of 131230125720 in words is "one hundred thirty-one billion, two hundred thirty million, one hundred twenty-five thousand, seven hundred twenty".