404234331131 has 2 divisors, whose sum is σ = 404234331132. Its totient is φ = 404234331130.

The previous prime is 404234331121. The next prime is 404234331283. The reversal of 404234331131 is 131133432404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404234331131 is a prime.

It is a super-2 number, since 2×404234331131² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 404234331094 and 404234331103.

It is not a weakly prime, because it can be changed into another prime (404234331121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202117165565 + 202117165566.

It is an arithmetic number, because the mean of its divisors is an integer number (202117165566).

Almost surely, 2^404234331131 is an apocalyptic number.

404234331131 is a deficient number, since it is larger than the sum of its proper divisors (1).

404234331131 is an equidigital number, since it uses as much as digits as its factorization.

404234331131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 404234331131 its reverse (131133432404), we get a palindrome (535367763535).

The spelling of 404234331131 in words is "four hundred four billion, two hundred thirty-four million, three hundred thirty-one thousand, one hundred thirty-one".