401111423 has 2 divisors, whose sum is σ = 401111424. Its totient is φ = 401111422.

The previous prime is 401111419. The next prime is 401111453. The reversal of 401111423 is 324111104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401111423 - 2² = 401111419 is a prime.

It is a super-2 number, since 2×401111423² = 321780747322169858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401111453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200555711 + 200555712.

It is an arithmetic number, because the mean of its divisors is an integer number (200555712).

Almost surely, 2^401111423 is an apocalyptic number.

401111423 is a deficient number, since it is larger than the sum of its proper divisors (1).

401111423 is an equidigital number, since it uses as much as digits as its factorization.

401111423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 401111423 is about 20027.7663008135. The cubic root of 401111423 is about 737.4880882113.

Adding to 401111423 its reverse (324111104), we get a palindrome (725222527).

The spelling of 401111423 in words is "four hundred one million, one hundred eleven thousand, four hundred twenty-three".