268111031 has 4 divisors (see below), whose sum is σ = 268183200. Its totient is φ = 268038864.

The previous prime is 268111027. The next prime is 268111037. The reversal of 268111031 is 130111862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130111862 = 2 ⋅65055931.

It is a cyclic number.

It is not a de Polignac number, because 268111031 - 2² = 268111027 is a prime.

It is a super-2 number, since 2×268111031² = 143767049887765922, 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 = 268110988 and 268111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268111037) 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 3 ways as a sum of consecutive naturals, for example, 30191 + ... + 38048.

It is an arithmetic number, because the mean of its divisors is an integer number (67045800).

Almost surely, 2^268111031 is an apocalyptic number.

268111031 is a deficient number, since it is larger than the sum of its proper divisors (72169).

268111031 is an equidigital number, since it uses as much as digits as its factorization.

268111031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72168.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 268111031 is about 16374.0963414779. The cubic root of 268111031 is about 644.8195966032.

Adding to 268111031 its reverse (130111862), we get a palindrome (398222893).

The spelling of 268111031 in words is "two hundred sixty-eight million, one hundred eleven thousand, thirty-one".