131020230 has 64 divisors (see below), whose sum is σ = 346519296. Its totient is φ = 31440000.

The previous prime is 131020199. The next prime is 131020237. The reversal of 131020230 is 32020131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131020237) 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 31 ways as a sum of consecutive naturals, for example, 31365 + ... + 35295.

It is an arithmetic number, because the mean of its divisors is an integer number (5414364).

Almost surely, 2^131020230 is an apocalyptic number.

131020230 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 131020230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173259648).

131020230 is an abundant number, since it is smaller than the sum of its proper divisors (215499066).

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

131020230 is a wasteful number, since it uses less digits than its factorization.

131020230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4053.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 131020230 is about 11446.4068597967. The cubic root of 131020230 is about 507.9014497691.

Adding to 131020230 its reverse (32020131), we get a palindrome (163040361).

Subtracting from 131020230 its reverse (32020131), we obtain a palindrome (99000099).

The spelling of 131020230 in words is "one hundred thirty-one million, twenty thousand, two hundred thirty".