402332213 has 2 divisors, whose sum is σ = 402332214. Its totient is φ = 402332212.

The previous prime is 402332153. The next prime is 402332219. The reversal of 402332213 is 312233204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 366416164 + 35916049 = 19142^2 + 5993^2 .

It is a cyclic number.

It is not a de Polignac number, because 402332213 - 2¹⁸ = 402070069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402332219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201166106 + 201166107.

It is an arithmetic number, because the mean of its divisors is an integer number (201166107).

Almost surely, 2^402332213 is an apocalyptic number.

It is an amenable number.

402332213 is a deficient number, since it is larger than the sum of its proper divisors (1).

402332213 is an equidigital number, since it uses as much as digits as its factorization.

402332213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 402332213 is about 20058.2205840897. The cubic root of 402332213 is about 738.2355166436.

Adding to 402332213 its reverse (312233204), we get a palindrome (714565417).

Subtracting from 402332213 its reverse (312233204), we obtain a palindrome (90099009).

The spelling of 402332213 in words is "four hundred two million, three hundred thirty-two thousand, two hundred thirteen".