123323154345 has 64 divisors (see below), whose sum is σ = 223085664000. Its totient is φ = 64620292608.

The previous prime is 123323154343. The next prime is 123323154377. The reversal of 123323154345 is 543451323321.

123323154345 is a `hidden beast` number, since 1 + 2 + 33 + 231 + 54 + 345 = 666.

It is not a de Polignac number, because 123323154345 - 2¹ = 123323154343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123323154341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18770221 + ... + 18776789.

It is an arithmetic number, because the mean of its divisors is an integer number (3485713500).

Almost surely, 2^123323154345 is an apocalyptic number.

123323154345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123323154345 is a deficient number, since it is larger than the sum of its proper divisors (99762509655).

123323154345 is a wasteful number, since it uses less digits than its factorization.

123323154345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8999 (or 8993 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 123323154345 its reverse (543451323321), we get a palindrome (666774477666).

The spelling of 123323154345 in words is "one hundred twenty-three billion, three hundred twenty-three million, one hundred fifty-four thousand, three hundred forty-five".