401345213 has 2 divisors, whose sum is σ = 401345214. Its totient is φ = 401345212.

The previous prime is 401345207. The next prime is 401345221. The reversal of 401345213 is 312543104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298667524 + 102677689 = 17282^2 + 10133^2 .

It is a cyclic number.

It is not a de Polignac number, because 401345213 - 2²² = 397150909 is a prime.

It is a super-2 number, since 2×401345213² = 322155959996030738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401345293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200672606 + 200672607.

It is an arithmetic number, because the mean of its divisors is an integer number (200672607).

Almost surely, 2^401345213 is an apocalyptic number.

It is an amenable number.

401345213 is a deficient number, since it is larger than the sum of its proper divisors (1).

401345213 is an equidigital number, since it uses as much as digits as its factorization.

401345213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 401345213 is about 20033.6020974761. The cubic root of 401345213 is about 737.6313433793.

Adding to 401345213 its reverse (312543104), we get a palindrome (713888317).

The spelling of 401345213 in words is "four hundred one million, three hundred forty-five thousand, two hundred thirteen".