401332213 has 2 divisors, whose sum is σ = 401332214. Its totient is φ = 401332212.

The previous prime is 401332181. The next prime is 401332241. The reversal of 401332213 is 312233104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209149444 + 192182769 = 14462^2 + 13863^2 .

It is a cyclic number.

It is not a de Polignac number, because 401332213 - 2⁵ = 401332181 is a prime.

It is a super-2 number, since 2×401332213² = 322135090382954738, which contains 22 as substring.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401332513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200666106 + 200666107.

It is an arithmetic number, because the mean of its divisors is an integer number (200666107).

Almost surely, 2^401332213 is an apocalyptic number.

It is an amenable number.

401332213 is a deficient number, since it is larger than the sum of its proper divisors (1).

401332213 is an equidigital number, since it uses as much as digits as its factorization.

401332213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 401332213 is about 20033.2776399670. The cubic root of 401332213 is about 737.6233790710.

Adding to 401332213 its reverse (312233104), we get a palindrome (713565317).

The spelling of 401332213 in words is "four hundred one million, three hundred thirty-two thousand, two hundred thirteen".