401318111 has 2 divisors, whose sum is σ = 401318112. Its totient is φ = 401318110.

The previous prime is 401318089. The next prime is 401318117. The reversal of 401318111 is 111813104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401318111 is a prime.

It is a super-2 number, since 2×401318111² = 322112452433216642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401318117) 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 as a sum of consecutive naturals, namely, 200659055 + 200659056.

It is an arithmetic number, because the mean of its divisors is an integer number (200659056).

Almost surely, 2^401318111 is an apocalyptic number.

401318111 is a deficient number, since it is larger than the sum of its proper divisors (1).

401318111 is an equidigital number, since it uses as much as digits as its factorization.

401318111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 401318111 is about 20032.9256725023. The cubic root of 401318111 is about 737.6147394400.

The spelling of 401318111 in words is "four hundred one million, three hundred eighteen thousand, one hundred eleven".