71002011 has 4 divisors (see below), whose sum is σ = 94669352. Its totient is φ = 47334672.

The previous prime is 71002003. The next prime is 71002021. The reversal of 71002011 is 11020017.

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

It is not a de Polignac number, because 71002011 - 2³ = 71002003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71002021) 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, 11833666 + ... + 11833671.

It is an arithmetic number, because the mean of its divisors is an integer number (23667338).

Almost surely, 2^71002011 is an apocalyptic number.

71002011 is a deficient number, since it is larger than the sum of its proper divisors (23667341).

71002011 is a wasteful number, since it uses less digits than its factorization.

71002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23667340.

The product of its (nonzero) digits is 14, while the sum is 12.

The square root of 71002011 is about 8426.2691032271. The cubic root of 71002011 is about 414.0856843817.

Adding to 71002011 its reverse (11020017), we get a palindrome (82022028).

The spelling of 71002011 in words is "seventy-one million, two thousand, eleven".