400320133 has 8 divisors (see below), whose sum is σ = 408432960. Its totient is φ = 392251680.

The previous prime is 400320113. The next prime is 400320157. The reversal of 400320133 is 331023004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400320133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400320113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7441 + ... + 29257.

It is an arithmetic number, because the mean of its divisors is an integer number (51054120).

Almost surely, 2^400320133 is an apocalyptic number.

It is an amenable number.

400320133 is a deficient number, since it is larger than the sum of its proper divisors (8112827).

400320133 is a wasteful number, since it uses less digits than its factorization.

400320133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22187.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 400320133 is about 20008.0017243102. The cubic root of 400320133 is about 737.0028106553.

Adding to 400320133 its reverse (331023004), we get a palindrome (731343137).

The spelling of 400320133 in words is "four hundred million, three hundred twenty thousand, one hundred thirty-three".