402320243231 has 2 divisors, whose sum is σ = 402320243232. Its totient is φ = 402320243230.

The previous prime is 402320243167. The next prime is 402320243249. The reversal of 402320243231 is 132342023204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402320243231 - 2⁶ = 402320243167 is a prime.

It is a super-2 number, since 2×402320243231² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402320243231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402320243291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201160121615 + 201160121616.

It is an arithmetic number, because the mean of its divisors is an integer number (201160121616).

Almost surely, 2^402320243231 is an apocalyptic number.

402320243231 is a deficient number, since it is larger than the sum of its proper divisors (1).

402320243231 is an equidigital number, since it uses as much as digits as its factorization.

402320243231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 402320243231 its reverse (132342023204), we get a palindrome (534662266435).

The spelling of 402320243231 in words is "four hundred two billion, three hundred twenty million, two hundred forty-three thousand, two hundred thirty-one".