352421213 has 2 divisors, whose sum is σ = 352421214. Its totient is φ = 352421212.

The previous prime is 352421171. The next prime is 352421243. The reversal of 352421213 is 312124253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342916324 + 9504889 = 18518^2 + 3083^2 .

It is a cyclic number.

It is not a de Polignac number, because 352421213 - 2¹⁸ = 352159069 is a prime.

It is a super-2 number, since 2×352421213² = 248401422744782738, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (352421243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176210606 + 176210607.

It is an arithmetic number, because the mean of its divisors is an integer number (176210607).

Almost surely, 2^352421213 is an apocalyptic number.

It is an amenable number.

352421213 is a deficient number, since it is larger than the sum of its proper divisors (1).

352421213 is an equidigital number, since it uses as much as digits as its factorization.

352421213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 352421213 is about 18772.8850473229. The cubic root of 352421213 is about 706.3511890098.

Adding to 352421213 its reverse (312124253), we get a palindrome (664545466).

The spelling of 352421213 in words is "three hundred fifty-two million, four hundred twenty-one thousand, two hundred thirteen".