345215420233 has 2 divisors, whose sum is σ = 345215420234. Its totient is φ = 345215420232.

The previous prime is 345215420197. The next prime is 345215420237. The reversal of 345215420233 is 332024512543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237610427209 + 107604993024 = 487453^2 + 328032^2 .

It is a cyclic number.

It is not a de Polignac number, because 345215420233 - 2⁹ = 345215419721 is a prime.

It is a super-3 number, since 3×345215420233³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (345215420237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172607710116 + 172607710117.

It is an arithmetic number, because the mean of its divisors is an integer number (172607710117).

Almost surely, 2^345215420233 is an apocalyptic number.

It is an amenable number.

345215420233 is a deficient number, since it is larger than the sum of its proper divisors (1).

345215420233 is an equidigital number, since it uses as much as digits as its factorization.

345215420233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 345215420233 its reverse (332024512543), we get a palindrome (677239932776).

The spelling of 345215420233 in words is "three hundred forty-five billion, two hundred fifteen million, four hundred twenty thousand, two hundred thirty-three".