345545123 has 32 divisors (see below), whose sum is σ = 457297920. Its totient is φ = 253107360.

The previous prime is 345545113. The next prime is 345545129. The reversal of 345545123 is 321545543.

It is a happy number.

It is not a de Polignac number, because 345545123 - 2⁶ = 345545059 is a prime.

It is a super-3 number, since 3×345545123³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345545123.

It is not an unprimeable number, because it can be changed into a prime (345545129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102836 + ... + 106142.

It is an arithmetic number, because the mean of its divisors is an integer number (14290560).

Almost surely, 2^345545123 is an apocalyptic number.

345545123 is a deficient number, since it is larger than the sum of its proper divisors (111752797).

345545123 is a wasteful number, since it uses less digits than its factorization.

345545123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3407.

The product of its digits is 36000, while the sum is 32.

The square root of 345545123 is about 18588.8440469008. The cubic root of 345545123 is about 701.7271113805.

The spelling of 345545123 in words is "three hundred forty-five million, five hundred forty-five thousand, one hundred twenty-three".