131430330 has 64 divisors (see below), whose sum is σ = 357972480. Its totient is φ = 34299072.

The previous prime is 131430319. The next prime is 131430371. The reversal of 131430330 is 33034131.

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

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, 7512 + ... + 17868.

It is an arithmetic number, because the mean of its divisors is an integer number (5593320).

Almost surely, 2^131430330 is an apocalyptic number.

131430330 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 131430330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178986240).

131430330 is an abundant number, since it is smaller than the sum of its proper divisors (226542150).

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

131430330 is a wasteful number, since it uses less digits than its factorization.

131430330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10420 (or 10414 counting only the distinct ones).

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

The square root of 131430330 is about 11464.3067823571. The cubic root of 131430330 is about 508.4308169816.

Adding to 131430330 its reverse (33034131), we get a palindrome (164464461).

The spelling of 131430330 in words is "one hundred thirty-one million, four hundred thirty thousand, three hundred thirty".