71230311 has 6 divisors (see below), whose sum is σ = 102888240. Its totient is φ = 47486868.

The previous prime is 71230309. The next prime is 71230319. The reversal of 71230311 is 11303217.

It is not a de Polignac number, because 71230311 - 2¹ = 71230309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71230319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3957231 + ... + 3957248.

It is an arithmetic number, because the mean of its divisors is an integer number (17148040).

Almost surely, 2^71230311 is an apocalyptic number.

71230311 is a deficient number, since it is larger than the sum of its proper divisors (31657929).

71230311 is a wasteful number, since it uses less digits than its factorization.

71230311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7914485 (or 7914482 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 71230311 is about 8439.8051517793. The cubic root of 71230311 is about 414.5290268426.

Adding to 71230311 its reverse (11303217), we get a palindrome (82533528).

The spelling of 71230311 in words is "seventy-one million, two hundred thirty thousand, three hundred eleven".