402323210813 has 2 divisors, whose sum is σ = 402323210814. Its totient is φ = 402323210812.

The previous prime is 402323210803. The next prime is 402323210831. The reversal of 402323210813 is 318012323204.

Together with next prime (402323210831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336449881849 + 65873328964 = 580043^2 + 256658^2 .

It is a cyclic number.

It is not a de Polignac number, because 402323210813 - 2⁸ = 402323210557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402323210803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201161605406 + 201161605407.

It is an arithmetic number, because the mean of its divisors is an integer number (201161605407).

Almost surely, 2^402323210813 is an apocalyptic number.

It is an amenable number.

402323210813 is a deficient number, since it is larger than the sum of its proper divisors (1).

402323210813 is an equidigital number, since it uses as much as digits as its factorization.

402323210813 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 29.

The spelling of 402323210813 in words is "four hundred two billion, three hundred twenty-three million, two hundred ten thousand, eight hundred thirteen".