123201130 has 64 divisors (see below), whose sum is σ = 259660800. Its totient is φ = 41679360.

The previous prime is 123201109. The next prime is 123201131. The reversal of 123201130 is 31102321.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 123201130.

It is not an unprimeable number, because it can be changed into a prime (123201131) 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 31 ways as a sum of consecutive naturals, for example, 75766 + ... + 77374.

It is an arithmetic number, because the mean of its divisors is an integer number (4057200).

Almost surely, 2^123201130 is an apocalyptic number.

123201130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123201130 is an abundant number, since it is smaller than the sum of its proper divisors (136459670).

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

123201130 is a wasteful number, since it uses less digits than its factorization.

123201130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 123201130 is about 11099.6004432592. The cubic root of 123201130 is about 497.5899082477.

Adding to 123201130 its reverse (31102321), we get a palindrome (154303451).

The spelling of 123201130 in words is "one hundred twenty-three million, two hundred one thousand, one hundred thirty".