402023213 has 2 divisors, whose sum is σ = 402023214. Its totient is φ = 402023212.

The previous prime is 402023207. The next prime is 402023239. The reversal of 402023213 is 312320204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203861284 + 198161929 = 14278^2 + 14077^2 .

It is a cyclic number.

It is not a de Polignac number, because 402023213 - 2⁴ = 402023197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402023191 and 402023200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402022213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201011606 + 201011607.

It is an arithmetic number, because the mean of its divisors is an integer number (201011607).

Almost surely, 2^402023213 is an apocalyptic number.

It is an amenable number.

402023213 is a deficient number, since it is larger than the sum of its proper divisors (1).

402023213 is an equidigital number, since it uses as much as digits as its factorization.

402023213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 402023213 is about 20050.5165270125. The cubic root of 402023213 is about 738.0464745277.

Adding to 402023213 its reverse (312320204), we get a palindrome (714343417).

The spelling of 402023213 in words is "four hundred two million, twenty-three thousand, two hundred thirteen".