400323133 has 16 divisors (see below), whose sum is σ = 461583360. Its totient is φ = 340096896.

The previous prime is 400323071. The next prime is 400323137. The reversal of 400323133 is 331323004.

It is a cyclic number.

It is not a de Polignac number, because 400323133 - 2¹⁷ = 400192061 is a prime.

It is a super-2 number, since 2×400323133² = 320517221629871378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400323133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400323137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494433 + ... + 495241.

It is an arithmetic number, because the mean of its divisors is an integer number (28848960).

Almost surely, 2^400323133 is an apocalyptic number.

It is an amenable number.

400323133 is a deficient number, since it is larger than the sum of its proper divisors (61260227).

400323133 is a wasteful number, since it uses less digits than its factorization.

400323133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 400323133 is about 20008.0766941753. The cubic root of 400323133 is about 737.0046516843.

Adding to 400323133 its reverse (331323004), we get a palindrome (731646137).

The spelling of 400323133 in words is "four hundred million, three hundred twenty-three thousand, one hundred thirty-three".