2171305030 has 16 divisors (see below), whose sum is σ = 3939125760. Its totient is φ = 861682752.

The previous prime is 2171305027. The next prime is 2171305039. The reversal of 2171305030 is 305031712.

It is a junction number, because it is equal to n+sod(n) for n = 2171304992 and 2171305010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171305039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853575 + ... + 856114.

It is an arithmetic number, because the mean of its divisors is an integer number (246195360).

Almost surely, 2^2171305030 is an apocalyptic number.

2171305030 is a deficient number, since it is larger than the sum of its proper divisors (1767820730).

2171305030 is a wasteful number, since it uses less digits than its factorization.

2171305030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709823.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 2171305030 is about 46597.2641900788. The cubic root of 2171305030 is about 1294.9120714686.

Adding to 2171305030 its reverse (305031712), we get a palindrome (2476336742).

The spelling of 2171305030 in words is "two billion, one hundred seventy-one million, three hundred five thousand, thirty".