404240132431 has 2 divisors, whose sum is σ = 404240132432. Its totient is φ = 404240132430.

The previous prime is 404240132399. The next prime is 404240132473. The reversal of 404240132431 is 134231042404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404240132431 - 2⁵ = 404240132399 is a prime.

It is a super-3 number, since 3×404240132431³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 404240132431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404240132731) 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 as a sum of consecutive naturals, namely, 202120066215 + 202120066216.

It is an arithmetic number, because the mean of its divisors is an integer number (202120066216).

Almost surely, 2^404240132431 is an apocalyptic number.

404240132431 is a deficient number, since it is larger than the sum of its proper divisors (1).

404240132431 is an equidigital number, since it uses as much as digits as its factorization.

404240132431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 404240132431 its reverse (134231042404), we get a palindrome (538471174835).

The spelling of 404240132431 in words is "four hundred four billion, two hundred forty million, one hundred thirty-two thousand, four hundred thirty-one".