131788782 has 20 divisors (see below), whose sum is σ = 295304856. Its totient is φ = 43929540.

The previous prime is 131788771. The next prime is 131788817. The reversal of 131788782 is 287887131.

It is a super-2 number, since 2×131788782² = 34736566122087048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 406594 + ... + 406917.

Almost surely, 2^131788782 is an apocalyptic number.

131788782 is an abundant number, since it is smaller than the sum of its proper divisors (163516074).

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

131788782 is an equidigital number, since it uses as much as digits as its factorization.

131788782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813525 (or 813516 counting only the distinct ones).

The product of its digits is 150528, while the sum is 45.

The square root of 131788782 is about 11479.9295294004. The cubic root of 131788782 is about 508.8926145265.

The spelling of 131788782 in words is "one hundred thirty-one million, seven hundred eighty-eight thousand, seven hundred eighty-two".