402144331271 has 2 divisors, whose sum is σ = 402144331272. Its totient is φ = 402144331270.

The previous prime is 402144331241. The next prime is 402144331279. The reversal of 402144331271 is 172133441204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402144331271 - 2¹⁸ = 402144069127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402144331279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201072165635 + 201072165636.

It is an arithmetic number, because the mean of its divisors is an integer number (201072165636).

Almost surely, 2^402144331271 is an apocalyptic number.

402144331271 is a deficient number, since it is larger than the sum of its proper divisors (1).

402144331271 is an equidigital number, since it uses as much as digits as its factorization.

402144331271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 402144331271 its reverse (172133441204), we get a palindrome (574277772475).

The spelling of 402144331271 in words is "four hundred two billion, one hundred forty-four million, three hundred thirty-one thousand, two hundred seventy-one".