131145234 has 16 divisors (see below), whose sum is σ = 286135200. Its totient is φ = 39740960.

The previous prime is 131145233. The next prime is 131145247. The reversal of 131145234 is 432541131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131145233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993459 + ... + 993590.

It is an arithmetic number, because the mean of its divisors is an integer number (17883450).

Almost surely, 2^131145234 is an apocalyptic number.

131145234 is an abundant number, since it is smaller than the sum of its proper divisors (154989966).

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

131145234 is a wasteful number, since it uses less digits than its factorization.

131145234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987065.

The product of its digits is 1440, while the sum is 24.

The square root of 131145234 is about 11451.8659614929. The cubic root of 131145234 is about 508.0629249145.

Adding to 131145234 its reverse (432541131), we get a palindrome (563686365).

The spelling of 131145234 in words is "one hundred thirty-one million, one hundred forty-five thousand, two hundred thirty-four".