402344143213 has 4 divisors (see below), whose sum is σ = 402679152028. Its totient is φ = 402009134400.

The previous prime is 402344143189. The next prime is 402344143219. The reversal of 402344143213 is 312341443204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97820068644 + 304524074569 = 312762^2 + 551837^2 .

It is a cyclic number.

It is not a de Polignac number, because 402344143213 - 2⁵ = 402344143181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402344143219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167502606 + ... + 167505007.

It is an arithmetic number, because the mean of its divisors is an integer number (100669788007).

Almost surely, 2^402344143213 is an apocalyptic number.

It is an amenable number.

402344143213 is a deficient number, since it is larger than the sum of its proper divisors (335008815).

402344143213 is a wasteful number, since it uses less digits than its factorization.

402344143213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335008814.

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

Adding to 402344143213 its reverse (312341443204), we get a palindrome (714685586417).

The spelling of 402344143213 in words is "four hundred two billion, three hundred forty-four million, one hundred forty-three thousand, two hundred thirteen".