272131861 has 8 divisors (see below), whose sum is σ = 273605024. Its totient is φ = 270663120.

The previous prime is 272131807. The next prime is 272131877. The reversal of 272131861 is 168131272.

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 272131861 - 2¹³ = 272123669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272131891) 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, 248431 + ... + 249523.

It is an arithmetic number, because the mean of its divisors is an integer number (34200628).

Almost surely, 2^272131861 is an apocalyptic number.

It is an amenable number.

272131861 is a deficient number, since it is larger than the sum of its proper divisors (1473163).

272131861 is a wasteful number, since it uses less digits than its factorization.

272131861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211.

The product of its digits is 4032, while the sum is 31.

The square root of 272131861 is about 16496.4196418496. The cubic root of 272131861 is about 648.0270439419.

The spelling of 272131861 in words is "two hundred seventy-two million, one hundred thirty-one thousand, eight hundred sixty-one".