402144343213 has 2 divisors, whose sum is σ = 402144343214. Its totient is φ = 402144343212.

The previous prime is 402144343199. The next prime is 402144343219. The reversal of 402144343213 is 312343441204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319074727689 + 83069615524 = 564867^2 + 288218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402144343213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402144343219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201072171606 + 201072171607.

It is an arithmetic number, because the mean of its divisors is an integer number (201072171607).

Almost surely, 2^402144343213 is an apocalyptic number.

It is an amenable number.

402144343213 is a deficient number, since it is larger than the sum of its proper divisors (1).

402144343213 is an equidigital number, since it uses as much as digits as its factorization.

402144343213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 402144343213 its reverse (312343441204), we get a palindrome (714487784417).

The spelling of 402144343213 in words is "four hundred two billion, one hundred forty-four million, three hundred forty-three thousand, two hundred thirteen".