401442313231 has 8 divisors (see below), whose sum is σ = 404711668224. Its totient is φ = 398177873280.

The previous prime is 401442313199. The next prime is 401442313241. The reversal of 401442313231 is 132313244104.

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 401442313231 - 2⁵ = 401442313199 is a prime.

It is a super-2 number, since 2×401442313231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401442313231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401442313241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1064655 + ... + 1391536.

It is an arithmetic number, because the mean of its divisors is an integer number (50588958528).

Almost surely, 2^401442313231 is an apocalyptic number.

401442313231 is a deficient number, since it is larger than the sum of its proper divisors (3269354993).

401442313231 is a wasteful number, since it uses less digits than its factorization.

401442313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457521.

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

Adding to 401442313231 its reverse (132313244104), we get a palindrome (533755557335).

The spelling of 401442313231 in words is "four hundred one billion, four hundred forty-two million, three hundred thirteen thousand, two hundred thirty-one".