268911111431 has 2 divisors, whose sum is σ = 268911111432. Its totient is φ = 268911111430.

The previous prime is 268911111331. The next prime is 268911111481. The reversal of 268911111431 is 134111119862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268911111431 - 2³⁰ = 267837369607 is a prime.

It is a super-2 number, since 2×268911111431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268911111481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134455555715 + 134455555716.

It is an arithmetic number, because the mean of its divisors is an integer number (134455555716).

Almost surely, 2^268911111431 is an apocalyptic number.

268911111431 is a deficient number, since it is larger than the sum of its proper divisors (1).

268911111431 is an equidigital number, since it uses as much as digits as its factorization.

268911111431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 38.

The spelling of 268911111431 in words is "two hundred sixty-eight billion, nine hundred eleven million, one hundred eleven thousand, four hundred thirty-one".