123133320 has 48 divisors (see below), whose sum is σ = 400184460. Its totient is φ = 32835456.

The previous prime is 123133313. The next prime is 123133331. The reversal of 123133320 is 23331321.

It can be written as a sum of positive squares in 2 ways, for example, as 119377476 + 3755844 = 10926^2 + 1938^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 123133293 and 123133302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170659 + ... + 171378.

Almost surely, 2^123133320 is an apocalyptic number.

123133320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123133320 is an abundant number, since it is smaller than the sum of its proper divisors (277051140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123133320 is a wasteful number, since it uses less digits than its factorization.

123133320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342054 (or 342047 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 123133320 is about 11096.5454083692. The cubic root of 123133320 is about 497.4986001998.

Adding to 123133320 its reverse (23331321), we get a palindrome (146464641).

The spelling of 123133320 in words is "one hundred twenty-three million, one hundred thirty-three thousand, three hundred twenty".