73689131 has 4 divisors (see below), whose sum is σ = 73830552. Its totient is φ = 73547712.

The previous prime is 73689113. The next prime is 73689157. The reversal of 73689131 is 13198637.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73689131 is a prime.

It is a super-2 number, since 2×73689131² = 10860176055070322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73689191) 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 3 ways as a sum of consecutive naturals, for example, 69926 + ... + 70971.

It is an arithmetic number, because the mean of its divisors is an integer number (18457638).

Almost surely, 2^73689131 is an apocalyptic number.

73689131 is a deficient number, since it is larger than the sum of its proper divisors (141421).

73689131 is a wasteful number, since it uses less digits than its factorization.

73689131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141420.

The product of its digits is 27216, while the sum is 38.

The square root of 73689131 is about 8584.2373569234. The cubic root of 73689131 is about 419.2449226224.

The spelling of 73689131 in words is "seventy-three million, six hundred eighty-nine thousand, one hundred thirty-one".