402321343 has 2 divisors, whose sum is σ = 402321344. Its totient is φ = 402321342.

The previous prime is 402321331. The next prime is 402321347. The reversal of 402321343 is 343123204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402321343 - 2²⁵ = 368766911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402321347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201160671 + 201160672.

It is an arithmetic number, because the mean of its divisors is an integer number (201160672).

Almost surely, 2^402321343 is an apocalyptic number.

402321343 is a deficient number, since it is larger than the sum of its proper divisors (1).

402321343 is an equidigital number, since it uses as much as digits as its factorization.

402321343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 402321343 is about 20057.9496210355. The cubic root of 402321343 is about 738.2288681642.

Adding to 402321343 its reverse (343123204), we get a palindrome (745444547).

The spelling of 402321343 in words is "four hundred two million, three hundred twenty-one thousand, three hundred forty-three".