131128788 has 48 divisors (see below), whose sum is σ = 350663040. Its totient is φ = 37359744.

The previous prime is 131128787. The next prime is 131128799. The reversal of 131128788 is 887821131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131128787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30670 + ... + 34682.

It is an arithmetic number, because the mean of its divisors is an integer number (7305480).

Almost surely, 2^131128788 is an apocalyptic number.

It is an amenable number.

131128788 is an abundant number, since it is smaller than the sum of its proper divisors (219534252).

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

131128788 is a wasteful number, since it uses less digits than its factorization.

131128788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416 (or 4414 counting only the distinct ones).

The product of its digits is 21504, while the sum is 39.

The square root of 131128788 is about 11451.1478900589. The cubic root of 131128788 is about 508.0416864958.

The spelling of 131128788 in words is "one hundred thirty-one million, one hundred twenty-eight thousand, seven hundred eighty-eight".