72131127 has 4 divisors (see below), whose sum is σ = 96174840. Its totient is φ = 48087416.

The previous prime is 72131117. The next prime is 72131159. The reversal of 72131127 is 72113127.

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

It is a cyclic number.

It is not a de Polignac number, because 72131127 - 2⁶ = 72131063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72131097 and 72131106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72131117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12021852 + ... + 12021857.

It is an arithmetic number, because the mean of its divisors is an integer number (24043710).

Almost surely, 2^72131127 is an apocalyptic number.

72131127 is a deficient number, since it is larger than the sum of its proper divisors (24043713).

72131127 is a wasteful number, since it uses less digits than its factorization.

72131127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24043712.

The product of its digits is 588, while the sum is 24.

The square root of 72131127 is about 8493.0045920157. The cubic root of 72131127 is about 416.2691625155.

The spelling of 72131127 in words is "seventy-two million, one hundred thirty-one thousand, one hundred twenty-seven".