3171113921 has 4 divisors (see below), whose sum is σ = 3357650052. Its totient is φ = 2984577792.

The previous prime is 3171113917. The next prime is 3171113947. The reversal of 3171113921 is 1293111713.

3171113921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2192112400 + 979001521 = 46820^2 + 31289^2 .

It is a cyclic number.

It is not a de Polignac number, because 3171113921 - 2² = 3171113917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3171113951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93268040 + ... + 93268073.

It is an arithmetic number, because the mean of its divisors is an integer number (839412513).

Almost surely, 2^3171113921 is an apocalyptic number.

It is an amenable number.

3171113921 is a deficient number, since it is larger than the sum of its proper divisors (186536131).

3171113921 is a wasteful number, since it uses less digits than its factorization.

3171113921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186536130.

The product of its digits is 1134, while the sum is 29.

The square root of 3171113921 is about 56312.6444149092. The cubic root of 3171113921 is about 1469.1651391927.

The spelling of 3171113921 in words is "three billion, one hundred seventy-one million, one hundred thirteen thousand, nine hundred twenty-one".