71031189 has 8 divisors (see below), whose sum is σ = 96122080. Its totient is φ = 46647216.

The previous prime is 71031161. The next prime is 71031193. The reversal of 71031189 is 98113017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71031189 - 2⁸ = 71030933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71031119) 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, 176494 + ... + 176895.

It is an arithmetic number, because the mean of its divisors is an integer number (12015260).

Almost surely, 2^71031189 is an apocalyptic number.

It is an amenable number.

71031189 is a deficient number, since it is larger than the sum of its proper divisors (25090891).

71031189 is a wasteful number, since it uses less digits than its factorization.

71031189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353459.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 71031189 is about 8428.0002966303. Note that the first 3 decimals coincide. The cubic root of 71031189 is about 414.1423989135.

The spelling of 71031189 in words is "seventy-one million, thirty-one thousand, one hundred eighty-nine".