257423111 has 16 divisors (see below), whose sum is σ = 295293600. Its totient is φ = 222230400.

The previous prime is 257423099. The next prime is 257423119. The reversal of 257423111 is 111324752.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257423111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257423119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12845 + ... + 26073.

It is an arithmetic number, because the mean of its divisors is an integer number (18455850).

Almost surely, 2^257423111 is an apocalyptic number.

257423111 is a deficient number, since it is larger than the sum of its proper divisors (37870489).

257423111 is a wasteful number, since it uses less digits than its factorization.

257423111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13330.

The product of its digits is 1680, while the sum is 26.

The square root of 257423111 is about 16044.4105843749. The cubic root of 257423111 is about 636.1348347156.

Adding to 257423111 its reverse (111324752), we get a palindrome (368747863).

The spelling of 257423111 in words is "two hundred fifty-seven million, four hundred twenty-three thousand, one hundred eleven".