401213 has 4 divisors (see below), whose sum is σ = 402588. Its totient is φ = 399840.

The previous prime is 401209. The next prime is 401231. The reversal of 401213 is 312104.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 56644 + 344569 = 238^2 + 587^2 .

It is a cyclic number.

It is not a de Polignac number, because 401213 - 2² = 401209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401194 and 401203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56 + ... + 897.

It is an arithmetic number, because the mean of its divisors is an integer number (100647).

2⁴⁰¹²¹³ is an apocalyptic number.

It is an amenable number.

401213 is a deficient number, since it is larger than the sum of its proper divisors (1375).

401213 is an equidigital number, since it uses as much as digits as its factorization.

401213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 401213 is about 633.4137668223. The cubic root of 401213 is about 73.7550336505.

Adding to 401213 its reverse (312104), we get a palindrome (713317).

The spelling of 401213 in words is "four hundred one thousand, two hundred thirteen".