400004234311231 has 8 divisors (see below), whose sum is σ = 436368808934784. Its totient is φ = 363639751908120.

The previous prime is 400004234311217. The next prime is 400004234311237. The reversal of 400004234311231 is 132113432400004.

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 400004234311231 - 2⁷ = 400004234311103 is a prime.

It is a super-2 number, since 2×400004234311231² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400004234311231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400004234311237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13825171 + ... + 31482436.

It is an arithmetic number, because the mean of its divisors is an integer number (54546101116848).

Almost surely, 2^{400004234311231} is an apocalyptic number.

400004234311231 is a deficient number, since it is larger than the sum of its proper divisors (36364574623553).

400004234311231 is a wasteful number, since it uses less digits than its factorization.

400004234311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46110221.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 400004234311231 its reverse (132113432400004), we get a palindrome (532117666711235).

The spelling of 400004234311231 in words is "four hundred trillion, four billion, two hundred thirty-four million, three hundred eleven thousand, two hundred thirty-one".