400133213 has 8 divisors (see below), whose sum is σ = 427284480. Its totient is φ = 373872240.

The previous prime is 400133191. The next prime is 400133219. The reversal of 400133213 is 312331004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400133213 - 2¹⁰ = 400132189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 400133191 and 400133200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400133219) 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 in 7 ways as a sum of consecutive naturals, for example, 221645 + ... + 223442.

It is an arithmetic number, because the mean of its divisors is an integer number (53410560).

Almost surely, 2^400133213 is an apocalyptic number.

It is an amenable number.

400133213 is a deficient number, since it is larger than the sum of its proper divisors (27151267).

400133213 is a wasteful number, since it uses less digits than its factorization.

400133213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445147.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 400133213 is about 20003.3300477695. The cubic root of 400133213 is about 736.8880841311. Note that the first 3 decimals are identical.

Adding to 400133213 its reverse (312331004), we get a palindrome (712464217).

The spelling of 400133213 in words is "four hundred million, one hundred thirty-three thousand, two hundred thirteen".