402343420313 has 2 divisors, whose sum is σ = 402343420314. Its totient is φ = 402343420312.

The previous prime is 402343420207. The next prime is 402343420331. The reversal of 402343420313 is 313024343204.

Together with next prime (402343420331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231450474649 + 170892945664 = 481093^2 + 413392^2 .

It is a cyclic number.

It is not a de Polignac number, because 402343420313 - 2¹² = 402343416217 is a prime.

It is a super-3 number, since 3×402343420313³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (402343420343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201171710156 + 201171710157.

It is an arithmetic number, because the mean of its divisors is an integer number (201171710157).

Almost surely, 2^402343420313 is an apocalyptic number.

It is an amenable number.

402343420313 is a deficient number, since it is larger than the sum of its proper divisors (1).

402343420313 is an equidigital number, since it uses as much as digits as its factorization.

402343420313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 402343420313 its reverse (313024343204), we get a palindrome (715367763517).

The spelling of 402343420313 in words is "four hundred two billion, three hundred forty-three million, four hundred twenty thousand, three hundred thirteen".