345612133 has 2 divisors, whose sum is σ = 345612134. Its totient is φ = 345612132.

The previous prime is 345612131. The next prime is 345612139. The reversal of 345612133 is 331216543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254657764 + 90954369 = 15958^2 + 9537^2 .

It is a cyclic number.

It is not a de Polignac number, because 345612133 - 2¹ = 345612131 is a prime.

Together with 345612131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345612131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172806066 + 172806067.

It is an arithmetic number, because the mean of its divisors is an integer number (172806067).

Almost surely, 2^345612133 is an apocalyptic number.

It is an amenable number.

345612133 is a deficient number, since it is larger than the sum of its proper divisors (1).

345612133 is an equidigital number, since it uses as much as digits as its factorization.

345612133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 345612133 is about 18590.6463846742. The cubic root of 345612133 is about 701.7724693683.

Adding to 345612133 its reverse (331216543), we get a palindrome (676828676).

The spelling of 345612133 in words is "three hundred forty-five million, six hundred twelve thousand, one hundred thirty-three".