401423213 has 2 divisors, whose sum is σ = 401423214. Its totient is φ = 401423212.

The previous prime is 401423207. The next prime is 401423237. The reversal of 401423213 is 312324104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255424324 + 145998889 = 15982^2 + 12083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401423213 is a prime.

It is a super-2 number, since 2×401423213² = 322281191870486738, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401423273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200711606 + 200711607.

It is an arithmetic number, because the mean of its divisors is an integer number (200711607).

Almost surely, 2^401423213 is an apocalyptic number.

It is an amenable number.

401423213 is a deficient number, since it is larger than the sum of its proper divisors (1).

401423213 is an equidigital number, since it uses as much as digits as its factorization.

401423213 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 401423213 is about 20035.5487321910. The cubic root of 401423213 is about 737.6791256177.

Adding to 401423213 its reverse (312324104), we get a palindrome (713747317).

The spelling of 401423213 in words is "four hundred one million, four hundred twenty-three thousand, two hundred thirteen".