71423211 has 16 divisors (see below), whose sum is σ = 99624960. Its totient is φ = 45429120.

The previous prime is 71423207. The next prime is 71423213. The reversal of 71423211 is 11232417.

It is not a de Polignac number, because 71423211 - 2² = 71423207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71423213) 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 15 ways as a sum of consecutive naturals, for example, 31971 + ... + 34131.

It is an arithmetic number, because the mean of its divisors is an integer number (6226560).

Almost surely, 2^71423211 is an apocalyptic number.

71423211 is a deficient number, since it is larger than the sum of its proper divisors (28201749).

71423211 is a wasteful number, since it uses less digits than its factorization.

71423211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666.

The product of its digits is 336, while the sum is 21.

The square root of 71423211 is about 8451.2254141042. The cubic root of 71423211 is about 414.9028872298.

Adding to 71423211 its reverse (11232417), we get a palindrome (82655628).

The spelling of 71423211 in words is "seventy-one million, four hundred twenty-three thousand, two hundred eleven".