71131377 has 8 divisors (see below), whose sum is σ = 94881280. Its totient is φ = 47401200.

The previous prime is 71131369. The next prime is 71131397. The reversal of 71131377 is 77313117.

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

It is not a de Polignac number, because 71131377 - 2³ = 71131369 is a prime.

It is a super-2 number, since 2×71131377² = 10119345587832258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71131337) 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 7 ways as a sum of consecutive naturals, for example, 9627 + ... + 15327.

It is an arithmetic number, because the mean of its divisors is an integer number (11860160).

Almost surely, 2^71131377 is an apocalyptic number.

It is an amenable number.

71131377 is a deficient number, since it is larger than the sum of its proper divisors (23749903).

71131377 is a wasteful number, since it uses less digits than its factorization.

71131377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9863.

The product of its digits is 3087, while the sum is 30.

The square root of 71131377 is about 8433.9419609101. The cubic root of 71131377 is about 414.3370204903.

The spelling of 71131377 in words is "seventy-one million, one hundred thirty-one thousand, three hundred seventy-seven".