345125311 has 2 divisors, whose sum is σ = 345125312. Its totient is φ = 345125310.

The previous prime is 345125303. The next prime is 345125323. The reversal of 345125311 is 113521543.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345125311 - 2³ = 345125303 is a prime.

It is a super-2 number, since 2×345125311² = 238222960585693442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345125111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172562655 + 172562656.

It is an arithmetic number, because the mean of its divisors is an integer number (172562656).

Almost surely, 2^345125311 is an apocalyptic number.

345125311 is a deficient number, since it is larger than the sum of its proper divisors (1).

345125311 is an equidigital number, since it uses as much as digits as its factorization.

345125311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 25.

The square root of 345125311 is about 18577.5485734798. The cubic root of 345125311 is about 701.4428138786.

Adding to 345125311 its reverse (113521543), we get a palindrome (458646854).

The spelling of 345125311 in words is "three hundred forty-five million, one hundred twenty-five thousand, three hundred eleven".