403400131 has 2 divisors, whose sum is σ = 403400132. Its totient is φ = 403400130.

The previous prime is 403400093. The next prime is 403400143. The reversal of 403400131 is 131004304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 403400131 - 2²⁵ = 369845699 is a prime.

It is a super-3 number, since 3×403400131³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (403403131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201700065 + 201700066.

It is an arithmetic number, because the mean of its divisors is an integer number (201700066).

Almost surely, 2^403400131 is an apocalyptic number.

403400131 is a deficient number, since it is larger than the sum of its proper divisors (1).

403400131 is an equidigital number, since it uses as much as digits as its factorization.

403400131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 403400131 is about 20084.8233997713. The cubic root of 403400131 is about 738.8881104164. Note that the first 3 decimals are identical.

Adding to 403400131 its reverse (131004304), we get a palindrome (534404435).

The spelling of 403400131 in words is "four hundred three million, four hundred thousand, one hundred thirty-one".