123133130 has 16 divisors (see below), whose sum is σ = 229282920. Its totient is φ = 47554752.

The previous prime is 123133121. The next prime is 123133141. The reversal of 123133130 is 31331321.

It can be written as a sum of positive squares in 4 ways, for example, as 71048041 + 52085089 = 8429^2 + 7217^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123133099 and 123133108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212009 + ... + 212588.

Almost surely, 2^123133130 is an apocalyptic number.

123133130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123133130 is a deficient number, since it is larger than the sum of its proper divisors (106149790).

123133130 is a wasteful number, since it uses less digits than its factorization.

123133130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424633.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 123133130 is about 11096.5368471429. The cubic root of 123133130 is about 497.4983443124.

Adding to 123133130 its reverse (31331321), we get a palindrome (154464451).

The spelling of 123133130 in words is "one hundred twenty-three million, one hundred thirty-three thousand, one hundred thirty".