131203332 has 72 divisors (see below), whose sum is σ = 366866136. Its totient is φ = 39273984.

The previous prime is 131203309. The next prime is 131203333. The reversal of 131203332 is 233302131.

131203332 is a `hidden beast` number, since 131 + 203 + 332 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 695556 + 130507776 = 834^2 + 11424^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (131203333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13528 + ... + 21104.

It is an arithmetic number, because the mean of its divisors is an integer number (5095363).

Almost surely, 2^131203332 is an apocalyptic number.

131203332 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 131203332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183433068).

131203332 is an abundant number, since it is smaller than the sum of its proper divisors (235662804).

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

131203332 is a wasteful number, since it uses less digits than its factorization.

131203332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7637 (or 7632 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 131203332 is about 11454.4022978067. The cubic root of 131203332 is about 508.1379386510.

Adding to 131203332 its reverse (233302131), we get a palindrome (364505463).

The spelling of 131203332 in words is "one hundred thirty-one million, two hundred three thousand, three hundred thirty-two".