400201213 has 4 divisors (see below), whose sum is σ = 411017500. Its totient is φ = 389384928.

The previous prime is 400201163. The next prime is 400201223. The reversal of 400201213 is 312102004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 191600964 + 208600249 = 13842^2 + 14443^2 .

It is a cyclic number.

It is not a de Polignac number, because 400201213 - 2¹³ = 400193021 is a prime.

It is a super-2 number, since 2×400201213² = 320322021773342738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400201193 and 400201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400201223) 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, 5408088 + ... + 5408161.

It is an arithmetic number, because the mean of its divisors is an integer number (102754375).

Almost surely, 2^400201213 is an apocalyptic number.

It is an amenable number.

400201213 is a deficient number, since it is larger than the sum of its proper divisors (10816287).

400201213 is a wasteful number, since it uses less digits than its factorization.

400201213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10816286.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 400201213 is about 20005.0296925548. The cubic root of 400201213 is about 736.9298248563.

Adding to 400201213 its reverse (312102004), we get a palindrome (712303217).

The spelling of 400201213 in words is "four hundred million, two hundred one thousand, two hundred thirteen".