210123030 has 32 divisors (see below), whose sum is σ = 543088224. Its totient is φ = 51722496.

The previous prime is 210123029. The next prime is 210123091. The reversal of 210123030 is 30321012.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210122997 and 210123015.

It is a congruent 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, 268999 + ... + 269778.

It is an arithmetic number, because the mean of its divisors is an integer number (16971507).

Almost surely, 2^210123030 is an apocalyptic number.

210123030 is an abundant number, since it is smaller than the sum of its proper divisors (332965194).

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

210123030 is a wasteful number, since it uses less digits than its factorization.

210123030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538800.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 210123030 is about 14495.6210629279. The cubic root of 210123030 is about 594.5082489201.

Adding to 210123030 its reverse (30321012), we get a palindrome (240444042).

It can be divided in two parts, 21012 and 3030, that added together give a palindrome (24042).

The spelling of 210123030 in words is "two hundred ten million, one hundred twenty-three thousand, thirty".