123143013 has 48 divisors (see below), whose sum is σ = 210203136. Its totient is φ = 68009760.

The previous prime is 123143011. The next prime is 123143017. The reversal of 123143013 is 310341321.

123143013 is a `hidden beast` number, since 1 + 231 + 430 + 1 + 3 = 666.

It is not a de Polignac number, because 123143013 - 2¹ = 123143011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123143011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 354706 + ... + 355052.

It is an arithmetic number, because the mean of its divisors is an integer number (4379232).

Almost surely, 2^123143013 is an apocalyptic number.

It is an amenable number.

123143013 is a deficient number, since it is larger than the sum of its proper divisors (87060123).

123143013 is a wasteful number, since it uses less digits than its factorization.

123143013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 123143013 is about 11096.9821573255. The cubic root of 123143013 is about 497.5116541465.

Adding to 123143013 its reverse (310341321), we get a palindrome (433484334).

It can be divided in two parts, 1231 and 43013, that added together give a palindrome (44244).

The spelling of 123143013 in words is "one hundred twenty-three million, one hundred forty-three thousand, thirteen".