345855123 has 16 divisors (see below), whose sum is σ = 542518560. Its totient is φ = 217006848.

The previous prime is 345855113. The next prime is 345855173. The reversal of 345855123 is 321558543.

345855123 is a `hidden beast` number, since 3 + 4 + 585 + 51 + 23 = 666.

It is not a de Polignac number, because 345855123 - 2⁵ = 345855091 is a prime.

It is a super-2 number, since 2×345855123² = 239231532210690258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345855113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376290 + ... + 377207.

It is an arithmetic number, because the mean of its divisors is an integer number (33907410).

Almost surely, 2^345855123 is an apocalyptic number.

345855123 is a deficient number, since it is larger than the sum of its proper divisors (196663437).

345855123 is a wasteful number, since it uses less digits than its factorization.

345855123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753523 (or 753517 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 345855123 is about 18597.1805121099. The cubic root of 345855123 is about 701.9368962197.

The spelling of 345855123 in words is "three hundred forty-five million, eight hundred fifty-five thousand, one hundred twenty-three".