131562330 has 64 divisors (see below), whose sum is σ = 323481600. Its totient is φ = 34233920.

The previous prime is 131562257. The next prime is 131562341. The reversal of 131562330 is 33265131.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131562330.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 422875 + ... + 423185.

It is an arithmetic number, because the mean of its divisors is an integer number (5054400).

Almost surely, 2^131562330 is an apocalyptic number.

131562330 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 131562330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161740800).

131562330 is an abundant number, since it is smaller than the sum of its proper divisors (191919270).

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

131562330 is a wasteful number, since it uses less digits than its factorization.

131562330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 131562330 is about 11470.0623363607. The cubic root of 131562330 is about 508.6009715481.

The spelling of 131562330 in words is "one hundred thirty-one million, five hundred sixty-two thousand, three hundred thirty".