72131205 has 8 divisors (see below), whose sum is σ = 115409952. Its totient is φ = 38469968.

The previous prime is 72131159. The next prime is 72131231. The reversal of 72131205 is 50213127.

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 72131205 - 2¹⁰ = 72130181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2404359 + ... + 2404388.

It is an arithmetic number, because the mean of its divisors is an integer number (14426244).

Almost surely, 2^72131205 is an apocalyptic number.

It is an amenable number.

72131205 is a deficient number, since it is larger than the sum of its proper divisors (43278747).

72131205 is a wasteful number, since it uses less digits than its factorization.

72131205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808755.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 72131205 is about 8493.0091840289. The cubic root of 72131205 is about 416.2693125616.

The spelling of 72131205 in words is "seventy-two million, one hundred thirty-one thousand, two hundred five".