131125434 has 16 divisors (see below), whose sum is σ = 286092000. Its totient is φ = 39734960.

The previous prime is 131125433. The next prime is 131125439. The reversal of 131125434 is 434521131.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131125433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993309 + ... + 993440.

It is an arithmetic number, because the mean of its divisors is an integer number (17880750).

Almost surely, 2^131125434 is an apocalyptic number.

131125434 is an abundant number, since it is smaller than the sum of its proper divisors (154966566).

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

131125434 is a wasteful number, since it uses less digits than its factorization.

131125434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986765.

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

The square root of 131125434 is about 11451.0014409221. The cubic root of 131125434 is about 508.0373549112.

Adding to 131125434 its reverse (434521131), we get a palindrome (565646565).

The spelling of 131125434 in words is "one hundred thirty-one million, one hundred twenty-five thousand, four hundred thirty-four".