73139131 has 8 divisors (see below), whose sum is σ = 81481680. Its totient is φ = 65184672.

The previous prime is 73139123. The next prime is 73139147. The reversal of 73139131 is 13193137.

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

It is a cyclic number.

It is not a de Polignac number, because 73139131 - 2³ = 73139123 is a prime.

It is a super-2 number, since 2×73139131² = 10698664966870322, which contains 22 as substring.

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 73139131.

It is not an unprimeable number, because it can be changed into a prime (73139111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96625 + ... + 97378.

It is an arithmetic number, because the mean of its divisors is an integer number (10185210).

Almost surely, 2^73139131 is an apocalyptic number.

73139131 is a deficient number, since it is larger than the sum of its proper divisors (8342549).

73139131 is a wasteful number, since it uses less digits than its factorization.

73139131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194045.

The product of its digits is 1701, while the sum is 28.

The square root of 73139131 is about 8552.1418954552. The cubic root of 73139131 is about 418.1992651268.

The spelling of 73139131 in words is "seventy-three million, one hundred thirty-nine thousand, one hundred thirty-one".