2171319356 has 12 divisors (see below), whose sum is σ = 4023327168. Its totient is φ = 1021797312.

The previous prime is 2171319341. The next prime is 2171319379. The reversal of 2171319356 is 6539131712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15965516 + ... + 15965651.

It is an arithmetic number, because the mean of its divisors is an integer number (335277264).

Almost surely, 2^2171319356 is an apocalyptic number.

It is an amenable number.

2171319356 is a deficient number, since it is larger than the sum of its proper divisors (1852007812).

2171319356 is a wasteful number, since it uses less digits than its factorization.

2171319356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31931188 (or 31931186 counting only the distinct ones).

The product of its digits is 34020, while the sum is 38.

The square root of 2171319356 is about 46597.4179112963. The cubic root of 2171319356 is about 1294.9149193519.

The spelling of 2171319356 in words is "two billion, one hundred seventy-one million, three hundred nineteen thousand, three hundred fifty-six".