31079171 has 4 divisors (see below), whose sum is σ = 31212792. Its totient is φ = 30945552.

The previous prime is 31079161. The next prime is 31079177. The reversal of 31079171 is 17197013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17197013 = 17 ⋅1011589.

It is a cyclic number.

It is not a de Polignac number, because 31079171 - 2¹⁰ = 31078147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31079177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66461 + ... + 66926.

It is an arithmetic number, because the mean of its divisors is an integer number (7803198).

Almost surely, 2^31079171 is an apocalyptic number.

31079171 is a deficient number, since it is larger than the sum of its proper divisors (133621).

31079171 is a wasteful number, since it uses less digits than its factorization.

31079171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133620.

The product of its (nonzero) digits is 1323, while the sum is 29.

The square root of 31079171 is about 5574.8695948874. The cubic root of 31079171 is about 314.4052639742.

The spelling of 31079171 in words is "thirty-one million, seventy-nine thousand, one hundred seventy-one".