71111116 has 12 divisors (see below), whose sum is σ = 126484960. Its totient is φ = 34972560.

The previous prime is 71111113. The next prime is 71111137. The reversal of 71111116 is 61111117.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71111093 and 71111102.

It is not an unprimeable number, because it can be changed into a prime (71111111) 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, 145476 + ... + 145963.

Almost surely, 2^71111116 is an apocalyptic number.

It is an amenable number.

71111116 is a deficient number, since it is larger than the sum of its proper divisors (55373844).

71111116 is a wasteful number, since it uses less digits than its factorization.

71111116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291504 (or 291502 counting only the distinct ones).

The product of its digits is 42, while the sum is 19.

The square root of 71111116 is about 8432.7407169911. The cubic root of 71111116 is about 414.2976769548.

Subtracting from 71111116 its reverse (61111117), we obtain a palindrome (9999999).

It can be divided in two parts, 7111111 and 6, that added together give a palindrome (7111117).

The spelling of 71111116 in words is "seventy-one million, one hundred eleven thousand, one hundred sixteen".