401422331 has 2 divisors, whose sum is σ = 401422332. Its totient is φ = 401422330.

The previous prime is 401422327. The next prime is 401422387. The reversal of 401422331 is 133224104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401422331 - 2² = 401422327 is a prime.

It is a super-2 number, since 2×401422331² = 322279775650947122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401422631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200711165 + 200711166.

It is an arithmetic number, because the mean of its divisors is an integer number (200711166).

Almost surely, 2^401422331 is an apocalyptic number.

401422331 is a deficient number, since it is larger than the sum of its proper divisors (1).

401422331 is an equidigital number, since it uses as much as digits as its factorization.

401422331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 401422331 is about 20035.5267213018. The cubic root of 401422331 is about 737.6785853455.

Adding to 401422331 its reverse (133224104), we get a palindrome (534646435).

The spelling of 401422331 in words is "four hundred one million, four hundred twenty-two thousand, three hundred thirty-one".