402323330023 has 4 divisors (see below), whose sum is σ = 402325658800. Its totient is φ = 402321001248.

The previous prime is 402323330009. The next prime is 402323330041. The reversal of 402323330023 is 320033323204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402323330023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402323330023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402323330723) 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, 882498 + ... + 1258351.

It is an arithmetic number, because the mean of its divisors is an integer number (100581414700).

Almost surely, 2^402323330023 is an apocalyptic number.

402323330023 is a deficient number, since it is larger than the sum of its proper divisors (2328777).

402323330023 is a wasteful number, since it uses less digits than its factorization.

402323330023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328776.

The product of its (nonzero) digits is 7776, while the sum is 25.

Adding to 402323330023 its reverse (320033323204), we get a palindrome (722356653227).

The spelling of 402323330023 in words is "four hundred two billion, three hundred twenty-three million, three hundred thirty thousand, twenty-three".