123523145343 has 24 divisors (see below), whose sum is σ = 199263679888. Its totient is φ = 76014241344.

The previous prime is 123523145329. The next prime is 123523145353. The reversal of 123523145343 is 343541325321.

123523145343 is a `hidden beast` number, since 12 + 35 + 231 + 45 + 343 = 666.

It is not a de Polignac number, because 123523145343 - 2⁴ = 123523145327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123523145298 and 123523145307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123523145353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19547830 + ... + 19554147.

Almost surely, 2^123523145343 is an apocalyptic number.

123523145343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123523145343 is a deficient number, since it is larger than the sum of its proper divisors (75740534545).

123523145343 is an equidigital number, since it uses as much as digits as its factorization.

123523145343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39102005 (or 39101993 counting only the distinct ones).

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

The spelling of 123523145343 in words is "one hundred twenty-three billion, five hundred twenty-three million, one hundred forty-five thousand, three hundred forty-three".