71311203 has 24 divisors (see below), whose sum is σ = 106972320. Its totient is φ = 45722880.

The previous prime is 71311181. The next prime is 71311241. The reversal of 71311203 is 30211317.

It is not a de Polignac number, because 71311203 - 2¹⁸ = 71049059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71311003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112698 + ... + 113328.

It is an arithmetic number, because the mean of its divisors is an integer number (4457180).

Almost surely, 2^71311203 is an apocalyptic number.

71311203 is a deficient number, since it is larger than the sum of its proper divisors (35661117).

71311203 is a wasteful number, since it uses less digits than its factorization.

71311203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1096 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 71311203 is about 8444.5960827028. The cubic root of 71311203 is about 414.6858860790.

The spelling of 71311203 in words is "seventy-one million, three hundred eleven thousand, two hundred three".