131440230 has 24 divisors (see below), whose sum is σ = 341744832. Its totient is φ = 35050704.

The previous prime is 131440213. The next prime is 131440249. The reversal of 131440230 is 32044131.

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

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 730134 + ... + 730313.

It is an arithmetic number, because the mean of its divisors is an integer number (14239368).

Almost surely, 2^131440230 is an apocalyptic number.

131440230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131440230 is an abundant number, since it is smaller than the sum of its proper divisors (210304602).

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

131440230 is a wasteful number, since it uses less digits than its factorization.

131440230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460460 (or 1460457 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 131440230 is about 11464.7385491340. The cubic root of 131440230 is about 508.4435825250.

Adding to 131440230 its reverse (32044131), we get a palindrome (163484361).

The spelling of 131440230 in words is "one hundred thirty-one million, four hundred forty thousand, two hundred thirty".