2100030172 has 6 divisors (see below), whose sum is σ = 3675052808. Its totient is φ = 1050015084.

The previous prime is 2100030161. The next prime is 2100030181. The reversal of 2100030172 is 2710300012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262503768 + ... + 262503775.

Almost surely, 2^2100030172 is an apocalyptic number.

It is an amenable number.

2100030172 is a deficient number, since it is larger than the sum of its proper divisors (1575022636).

2100030172 is a wasteful number, since it uses less digits than its factorization.

2100030172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525007547 (or 525007545 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 2100030172 is about 45826.0861518852. The cubic root of 2100030172 is about 1280.5852979160.

Adding to 2100030172 its reverse (2710300012), we get a palindrome (4810330184).

The spelling of 2100030172 in words is "two billion, one hundred million, thirty thousand, one hundred seventy-two".