401039323 has 2 divisors, whose sum is σ = 401039324. Its totient is φ = 401039322.

The previous prime is 401039321. The next prime is 401039329. The reversal of 401039323 is 323930104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401039323 - 2¹ = 401039321 is a prime.

Together with 401039321, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (401039321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200519661 + 200519662.

It is an arithmetic number, because the mean of its divisors is an integer number (200519662).

Almost surely, 2^401039323 is an apocalyptic number.

401039323 is a deficient number, since it is larger than the sum of its proper divisors (1).

401039323 is an equidigital number, since it uses as much as digits as its factorization.

401039323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 401039323 is about 20025.9662188869. The cubic root of 401039323 is about 737.4438975996.

Adding to 401039323 its reverse (323930104), we get a palindrome (724969427).

The spelling of 401039323 in words is "four hundred one million, thirty-nine thousand, three hundred twenty-three".