123031130 has 32 divisors (see below), whose sum is σ = 225218448. Its totient is φ = 48384000.

The previous prime is 123031121. The next prime is 123031151. The reversal of 123031130 is 31130321.

It can be written as a sum of positive squares in 8 ways, for example, as 36857041 + 86174089 = 6071^2 + 9283^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182474 + ... + 183146.

Almost surely, 2^123031130 is an apocalyptic number.

123031130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123031130 is a deficient number, since it is larger than the sum of its proper divisors (102187318).

123031130 is a wasteful number, since it uses less digits than its factorization.

123031130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 123031130 is about 11091.9398664075. The cubic root of 123031130 is about 497.3609351807.

Adding to 123031130 its reverse (31130321), we get a palindrome (154161451).

The spelling of 123031130 in words is "one hundred twenty-three million, thirty-one thousand, one hundred thirty".