131128632 has 48 divisors (see below), whose sum is σ = 368298840. Its totient is φ = 43708896.

The previous prime is 131128609. The next prime is 131128651. The reversal of 131128632 is 236821131.

It is a happy number.

131128632 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 28 + 632 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 131128596 and 131128605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31783 + ... + 35670.

Almost surely, 2^131128632 is an apocalyptic number.

131128632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131128632 is an abundant number, since it is smaller than the sum of its proper divisors (237170208).

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

131128632 is an equidigital number, since it uses as much as digits as its factorization.

131128632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67474 (or 67458 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 131128632 is about 11451.1410785127. The cubic root of 131128632 is about 508.0414850284.

Adding to 131128632 its reverse (236821131), we get a palindrome (367949763).

The spelling of 131128632 in words is "one hundred thirty-one million, one hundred twenty-eight thousand, six hundred thirty-two".