71239103 has 4 divisors (see below), whose sum is σ = 76719048. Its totient is φ = 65759160.

The previous prime is 71239087. The next prime is 71239121. The reversal of 71239103 is 30193217.

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

It is a cyclic number.

It is not a de Polignac number, because 71239103 - 2⁴ = 71239087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71239123) 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, 2739953 + ... + 2739978.

It is an arithmetic number, because the mean of its divisors is an integer number (19179762).

Almost surely, 2^71239103 is an apocalyptic number.

71239103 is a deficient number, since it is larger than the sum of its proper divisors (5479945).

71239103 is a wasteful number, since it uses less digits than its factorization.

71239103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5479944.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 71239103 is about 8440.3260008130. The cubic root of 71239103 is about 414.5460813297.

The spelling of 71239103 in words is "seventy-one million, two hundred thirty-nine thousand, one hundred three".