71434013 has 36 divisors (see below), whose sum is σ = 90335196. Its totient is φ = 56246400.

The previous prime is 71434009. The next prime is 71434019. The reversal of 71434013 is 31043417.

It can be written as a sum of positive squares in 2 ways, for example, as 31832164 + 39601849 = 5642^2 + 6293^2 .

It is not a de Polignac number, because 71434013 - 2² = 71434009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71434013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71434019) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1742273 + ... + 1742313.

It is an arithmetic number, because the mean of its divisors is an integer number (2509311).

Almost surely, 2^71434013 is an apocalyptic number.

It is an amenable number.

71434013 is a deficient number, since it is larger than the sum of its proper divisors (18901183).

71434013 is a wasteful number, since it uses less digits than its factorization.

71434013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 71434013 is about 8451.8644688613. The cubic root of 71434013 is about 414.9238027231.

The spelling of 71434013 in words is "seventy-one million, four hundred thirty-four thousand, thirteen".