131181132 has 48 divisors (see below), whose sum is σ = 321719552. Its totient is φ = 41549760.

The previous prime is 131181079. The next prime is 131181133. The reversal of 131181132 is 231181131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131181099 and 131181108.

It is not an unprimeable number, because it can be changed into a prime (131181133) 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, 15657 + ... + 22527.

Almost surely, 2^131181132 is an apocalyptic number.

131181132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131181132 is an abundant number, since it is smaller than the sum of its proper divisors (190538420).

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

131181132 is a wasteful number, since it uses less digits than its factorization.

131181132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6958 (or 6956 counting only the distinct ones).

The product of its digits is 144, while the sum is 21.

The square root of 131181132 is about 11453.4331970811. The cubic root of 131181132 is about 508.1092775432.

Subtracting 131181132 from its reverse (231181131), we obtain a palindrome (99999999).

The spelling of 131181132 in words is "one hundred thirty-one million, one hundred eighty-one thousand, one hundred thirty-two".