401218213 has 12 divisors (see below), whose sum is σ = 455238784. Its totient is φ = 352974600.

The previous prime is 401218163. The next prime is 401218217. The reversal of 401218213 is 312812104.

It is a happy number.

It is not a de Polignac number, because 401218213 - 2²¹ = 399121061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401218217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49731 + ... + 57232.

Almost surely, 2^401218213 is an apocalyptic number.

It is an amenable number.

401218213 is a deficient number, since it is larger than the sum of its proper divisors (54020571).

401218213 is a wasteful number, since it uses less digits than its factorization.

401218213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107016 (or 107005 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 401218213 is about 20030.4321720726. The cubic root of 401218213 is about 737.5535308458.

The spelling of 401218213 in words is "four hundred one million, two hundred eighteen thousand, two hundred thirteen".