402312443 has 8 divisors (see below), whose sum is σ = 435825600. Its totient is φ = 371363304.

The previous prime is 402312439. The next prime is 402312461. The reversal of 402312443 is 344213204.

It is not a de Polignac number, because 402312443 - 2² = 402312439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402312643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89363 + ... + 93756.

It is an arithmetic number, because the mean of its divisors is an integer number (54478200).

Almost surely, 2^402312443 is an apocalyptic number.

402312443 is a deficient number, since it is larger than the sum of its proper divisors (33513157).

402312443 is an equidigital number, since it uses as much as digits as its factorization.

402312443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183158 (or 183132 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 402312443 is about 20057.7277626355. The cubic root of 402312443 is about 738.2234245178.

Adding to 402312443 its reverse (344213204), we get a palindrome (746525647).

The spelling of 402312443 in words is "four hundred two million, three hundred twelve thousand, four hundred forty-three".