71431607 has 8 divisors (see below), whose sum is σ = 77437920. Its totient is φ = 65498400.

The previous prime is 71431601. The next prime is 71431627. The reversal of 71431607 is 70613417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71431607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71431607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71431601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16232 + ... + 20157.

It is an arithmetic number, because the mean of its divisors is an integer number (9679740).

Almost surely, 2^71431607 is an apocalyptic number.

71431607 is a deficient number, since it is larger than the sum of its proper divisors (6006313).

71431607 is a wasteful number, since it uses less digits than its factorization.

71431607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36553.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 71431607 is about 8451.7221322048. The cubic root of 71431607 is about 414.9191442612.

The spelling of 71431607 in words is "seventy-one million, four hundred thirty-one thousand, six hundred seven".