402331430213 has 4 divisors (see below), whose sum is σ = 402398168940. Its totient is φ = 402264691488.

The previous prime is 402331430177. The next prime is 402331430231. The reversal of 402331430213 is 312034133204.

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 369004006849 + 33327423364 = 607457^2 + 182558^2 .

It is a cyclic number.

It is not a de Polignac number, because 402331430213 - 2⁸ = 402331429957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402331430513) 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, 33360320 + ... + 33372377.

It is an arithmetic number, because the mean of its divisors is an integer number (100599542235).

Almost surely, 2^402331430213 is an apocalyptic number.

It is an amenable number.

402331430213 is a deficient number, since it is larger than the sum of its proper divisors (66738727).

402331430213 is an equidigital number, since it uses as much as digits as its factorization.

402331430213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66738726.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 402331430213 its reverse (312034133204), we get a palindrome (714365563417).

The spelling of 402331430213 in words is "four hundred two billion, three hundred thirty-one million, four hundred thirty thousand, two hundred thirteen".