402323210213 has 4 divisors (see below), whose sum is σ = 425989281420. Its totient is φ = 378657139008.

The previous prime is 402323210207. The next prime is 402323210231. The reversal of 402323210213 is 312012323204.

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 227764699009 + 174558511204 = 477247^2 + 417802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402323210213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402323210813) 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, 11833035578 + ... + 11833035611.

It is an arithmetic number, because the mean of its divisors is an integer number (106497320355).

Almost surely, 2^402323210213 is an apocalyptic number.

It is an amenable number.

402323210213 is a deficient number, since it is larger than the sum of its proper divisors (23666071207).

402323210213 is a wasteful number, since it uses less digits than its factorization.

402323210213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23666071206.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 402323210213 its reverse (312012323204), we get a palindrome (714335533417).

The spelling of 402323210213 in words is "four hundred two billion, three hundred twenty-three million, two hundred ten thousand, two hundred thirteen".