71231763 has 4 divisors (see below), whose sum is σ = 94975688. Its totient is φ = 47487840.

The previous prime is 71231749. The next prime is 71231767. The reversal of 71231763 is 36713217.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 71231763 - 2⁸ = 71231507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71231763.

It is not an unprimeable number, because it can be changed into a prime (71231767) 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, 11871958 + ... + 11871963.

It is an arithmetic number, because the mean of its divisors is an integer number (23743922).

Almost surely, 2^71231763 is an apocalyptic number.

71231763 is a deficient number, since it is larger than the sum of its proper divisors (23743925).

71231763 is a wasteful number, since it uses less digits than its factorization.

71231763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23743924.

The product of its digits is 5292, while the sum is 30.

The square root of 71231763 is about 8439.8911722842. The cubic root of 71231763 is about 414.5318434902.

The spelling of 71231763 in words is "seventy-one million, two hundred thirty-one thousand, seven hundred sixty-three".