131004234 has 24 divisors (see below), whose sum is σ = 289200132. Its totient is φ = 42843840.

The previous prime is 131004217. The next prime is 131004253. The reversal of 131004234 is 432400131.

It can be written as a sum of positive squares in 2 ways, for example, as 116964225 + 14040009 = 10815^2 + 3747^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67707 + ... + 69614.

Almost surely, 2^131004234 is an apocalyptic number.

131004234 is an abundant number, since it is smaller than the sum of its proper divisors (158195898).

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

131004234 is a wasteful number, since it uses less digits than its factorization.

131004234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137382 (or 137379 counting only the distinct ones).

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

The square root of 131004234 is about 11445.7081039139. The cubic root of 131004234 is about 507.8807793677.

Adding to 131004234 its reverse (432400131), we get a palindrome (563404365).

The spelling of 131004234 in words is "one hundred thirty-one million, four thousand, two hundred thirty-four".