401311423 has 2 divisors, whose sum is σ = 401311424. Its totient is φ = 401311422.

The previous prime is 401311409. The next prime is 401311433. The reversal of 401311423 is 324113104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401311423 - 2²¹ = 399214271 is a prime.

It is a super-2 number, since 2×401311423² = 322101716460569858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401311423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401311433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200655711 + 200655712.

It is an arithmetic number, because the mean of its divisors is an integer number (200655712).

Almost surely, 2^401311423 is an apocalyptic number.

401311423 is a deficient number, since it is larger than the sum of its proper divisors (1).

401311423 is an equidigital number, since it uses as much as digits as its factorization.

401311423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 401311423 is about 20032.7587466130. The cubic root of 401311423 is about 737.6106419467.

Adding to 401311423 its reverse (324113104), we get a palindrome (725424527).

The spelling of 401311423 in words is "four hundred one million, three hundred eleven thousand, four hundred twenty-three".