131052330 has 56 divisors (see below), whose sum is σ = 353699172. Its totient is φ = 34945344.

The previous prime is 131052323. The next prime is 131052331. The reversal of 131052330 is 33250131.

It can be written as a sum of positive squares in 2 ways, for example, as 130439241 + 613089 = 11421^2 + 783^2 .

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 (131052331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1699 + ... + 16278.

Almost surely, 2^131052330 is an apocalyptic number.

131052330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131052330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176849586).

131052330 is an abundant number, since it is smaller than the sum of its proper divisors (222646842).

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

131052330 is an equidigital number, since it uses as much as digits as its factorization.

131052330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18002 (or 17987 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 131052330 is about 11447.8089606702. The cubic root of 131052330 is about 507.9429250569.

The spelling of 131052330 in words is "one hundred thirty-one million, fifty-two thousand, three hundred thirty".