71331943 has 8 divisors (see below), whose sum is σ = 72355248. Its totient is φ = 70312704.

The previous prime is 71331917. The next prime is 71331959. The reversal of 71331943 is 34913317.

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

It is a cyclic number.

It is not a de Polignac number, because 71331943 - 2¹³ = 71323751 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 (71337943) 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, 55221 + ... + 56497.

It is an arithmetic number, because the mean of its divisors is an integer number (9044406).

Almost surely, 2^71331943 is an apocalyptic number.

71331943 is a deficient number, since it is larger than the sum of its proper divisors (1023305).

71331943 is a wasteful number, since it uses less digits than its factorization.

71331943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033.

The product of its digits is 6804, while the sum is 31.

The square root of 71331943 is about 8445.8239976926. The cubic root of 71331943 is about 414.7260843053.

The spelling of 71331943 in words is "seventy-one million, three hundred thirty-one thousand, nine hundred forty-three".