123411893 has 18 divisors (see below), whose sum is σ = 138460182. Its totient is φ = 109914640.

The previous prime is 123411889. The next prime is 123411901. The reversal of 123411893 is 398114321.

It can be written as a sum of positive squares in only one way, i.e., 121727089 + 1684804 = 11033^2 + 1298^2 .

It is not a de Polignac number, because 123411893 - 2² = 123411889 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123411863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 421055 + ... + 421347.

Almost surely, 2^123411893 is an apocalyptic number.

It is an amenable number.

123411893 is a deficient number, since it is larger than the sum of its proper divisors (15048289).

123411893 is an equidigital number, since it uses as much as digits as its factorization.

123411893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 363 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 123411893 is about 11109.0905568368. The cubic root of 123411893 is about 497.8734927554.

The spelling of 123411893 in words is "one hundred twenty-three million, four hundred eleven thousand, eight hundred ninety-three".