123100030 has 16 divisors (see below), whose sum is σ = 222165504. Its totient is φ = 49109920.

The previous prime is 123099997. The next prime is 123100051. The reversal of 123100030 is 30001321.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

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, 12241 + ... + 19900.

It is an arithmetic number, because the mean of its divisors is an integer number (13885344).

Almost surely, 2^123100030 is an apocalyptic number.

123100030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123100030 is a deficient number, since it is larger than the sum of its proper divisors (99065474).

123100030 is a wasteful number, since it uses less digits than its factorization.

123100030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32531.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 123100030 is about 11095.0452905790. The cubic root of 123100030 is about 497.4537620218.

Adding to 123100030 its reverse (30001321), we get a palindrome (153101351).

The spelling of 123100030 in words is "one hundred twenty-three million, one hundred thousand, thirty".