131125241 has 6 divisors (see below), whose sum is σ = 141987870. Its totient is φ = 121038528.

The previous prime is 131125223. The next prime is 131125243. The reversal of 131125241 is 142521131.

It can be written as a sum of positive squares in 3 ways, for example, as 9486400 + 121638841 = 3080^2 + 11029^2 .

It is not a de Polignac number, because 131125241 - 2¹⁸ = 130863097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131125243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 387776 + ... + 388113.

It is an arithmetic number, because the mean of its divisors is an integer number (23664645).

Almost surely, 2^131125241 is an apocalyptic number.

It is an amenable number.

131125241 is a deficient number, since it is larger than the sum of its proper divisors (10862629).

131125241 is an equidigital number, since it uses as much as digits as its factorization.

131125241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775915 (or 775902 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 131125241 is about 11450.9930137085. The cubic root of 131125241 is about 508.0371056555.

Adding to 131125241 its reverse (142521131), we get a palindrome (273646372).

The spelling of 131125241 in words is "one hundred thirty-one million, one hundred twenty-five thousand, two hundred forty-one".