71103211 has 4 divisors (see below), whose sum is σ = 71212752. Its totient is φ = 70993672.

The previous prime is 71103203. The next prime is 71103251. The reversal of 71103211 is 11230117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11230117 = 53 ⋅211889.

It is a cyclic number.

It is not a de Polignac number, because 71103211 - 2³ = 71103203 is a prime.

It is a super-2 number, since 2×71103211² = 10111333229021042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71103251) 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, 53791 + ... + 55096.

It is an arithmetic number, because the mean of its divisors is an integer number (17803188).

Almost surely, 2^71103211 is an apocalyptic number.

71103211 is a deficient number, since it is larger than the sum of its proper divisors (109541).

71103211 is a wasteful number, since it uses less digits than its factorization.

71103211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109540.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 71103211 is about 8432.2719951387. The cubic root of 71103211 is about 414.2823247161.

Adding to 71103211 its reverse (11230117), we get a palindrome (82333328).

The spelling of 71103211 in words is "seventy-one million, one hundred three thousand, two hundred eleven".