71231793 has 4 divisors (see below), whose sum is σ = 94975728. Its totient is φ = 47487860.

The previous prime is 71231791. The next prime is 71231807. The reversal of 71231793 is 39713217.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71231793 - 2¹ = 71231791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71231791) 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, 11871963 + ... + 11871968.

It is an arithmetic number, because the mean of its divisors is an integer number (23743932).

Almost surely, 2^71231793 is an apocalyptic number.

It is an amenable number.

71231793 is a deficient number, since it is larger than the sum of its proper divisors (23743935).

71231793 is a wasteful number, since it uses less digits than its factorization.

71231793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23743934.

The product of its digits is 7938, while the sum is 33.

The square root of 71231793 is about 8439.8929495581. The cubic root of 71231793 is about 414.5319016850.

The spelling of 71231793 in words is "seventy-one million, two hundred thirty-one thousand, seven hundred ninety-three".