257541131 has 4 divisors (see below), whose sum is σ = 263822664. Its totient is φ = 251259600.

The previous prime is 257541113. The next prime is 257541133. The reversal of 257541131 is 131145752.

257541131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257541131 - 2¹⁴ = 257524747 is a prime.

It is a super-2 number, since 2×257541131² = 132654868313518322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257541094 and 257541103.

It is not an unprimeable number, because it can be changed into a prime (257541133) 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, 3140705 + ... + 3140786.

It is an arithmetic number, because the mean of its divisors is an integer number (65955666).

Almost surely, 2^257541131 is an apocalyptic number.

257541131 is a deficient number, since it is larger than the sum of its proper divisors (6281533).

257541131 is an equidigital number, since it uses as much as digits as its factorization.

257541131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6281532.

The product of its digits is 4200, while the sum is 29.

The square root of 257541131 is about 16048.0880792698. The cubic root of 257541131 is about 636.2320354712.

Adding to 257541131 its reverse (131145752), we get a palindrome (388686883).

The spelling of 257541131 in words is "two hundred fifty-seven million, five hundred forty-one thousand, one hundred thirty-one".