131301257 has 4 divisors (see below), whose sum is σ = 131347476. Its totient is φ = 131255040.

The previous prime is 131301199. The next prime is 131301259. The reversal of 131301257 is 752103131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752103131 = 13 ⋅57854087.

It can be written as a sum of positive squares in 2 ways, for example, as 110334016 + 20967241 = 10504^2 + 4579^2 .

It is a cyclic number.

It is not a de Polignac number, because 131301257 - 2¹⁴ = 131284873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131301259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18548 + ... + 24629.

It is an arithmetic number, because the mean of its divisors is an integer number (32836869).

Almost surely, 2^131301257 is an apocalyptic number.

It is an amenable number.

131301257 is a deficient number, since it is larger than the sum of its proper divisors (46219).

131301257 is an equidigital number, since it uses as much as digits as its factorization.

131301257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46218.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 131301257 is about 11458.6760579048. The cubic root of 131301257 is about 508.2643252616.

Adding to 131301257 its reverse (752103131), we get a palindrome (883404388).

The spelling of 131301257 in words is "one hundred thirty-one million, three hundred one thousand, two hundred fifty-seven".