404142412231 has 2 divisors, whose sum is σ = 404142412232. Its totient is φ = 404142412230.

The previous prime is 404142412213. The next prime is 404142412259. The reversal of 404142412231 is 132214241404.

Together with previous prime (404142412213) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (404142412259) can be obtained adding 404142412231 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404142412231 - 2⁷ = 404142412103 is a prime.

It is a super-2 number, since 2×404142412231² (a number of 24 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 404142412231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404142412631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202071206115 + 202071206116.

It is an arithmetic number, because the mean of its divisors is an integer number (202071206116).

Almost surely, 2^404142412231 is an apocalyptic number.

404142412231 is a deficient number, since it is larger than the sum of its proper divisors (1).

404142412231 is an equidigital number, since it uses as much as digits as its factorization.

404142412231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 404142412231 its reverse (132214241404), we get a palindrome (536356653635).

The spelling of 404142412231 in words is "four hundred four billion, one hundred forty-two million, four hundred twelve thousand, two hundred thirty-one".