131433132 has 48 divisors (see below), whose sum is σ = 321753600. Its totient is φ = 41678208.

The previous prime is 131433121. The next prime is 131433143. The reversal of 131433132 is 231334131.

It is an interprime number because it is at equal distance from previous prime (131433121) and next prime (131433143).

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 = 131433099 and 131433108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53728 + ... + 56120.

It is an arithmetic number, because the mean of its divisors is an integer number (6703200).

Almost surely, 2^131433132 is an apocalyptic number.

131433132 is a gapful number since it is divisible by the number (12) 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 131433132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160876800).

131433132 is an abundant number, since it is smaller than the sum of its proper divisors (190320468).

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

131433132 is a wasteful number, since it uses less digits than its factorization.

131433132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622 (or 2620 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 131433132 is about 11464.4289870887. The cubic root of 131433132 is about 508.4344300823.

Adding to 131433132 its reverse (231334131), we get a palindrome (362767263).

Subtracting 131433132 from its reverse (231334131), we obtain a palindrome (99900999).

The spelling of 131433132 in words is "one hundred thirty-one million, four hundred thirty-three thousand, one hundred thirty-two".