7872231 has 8 divisors (see below), whose sum is σ = 10780144. Its totient is φ = 5106240.

The previous prime is 7872223. The next prime is 7872239. The reversal of 7872231 is 1322787.

7872231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7872223) and next prime (7872239).

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

It is not a de Polignac number, because 7872231 - 2³ = 7872223 is a prime.

It is a super-2 number, since 2×7872231² = 123944041834722, which contains 22 as substring.

It is a Duffinian number.

7872231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872239) 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, 35350 + ... + 35571.

It is an arithmetic number, because the mean of its divisors is an integer number (1347518).

Almost surely, 2^7872231 is an apocalyptic number.

7872231 is a deficient number, since it is larger than the sum of its proper divisors (2907913).

7872231 is a wasteful number, since it uses less digits than its factorization.

7872231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70961.

The product of its digits is 4704, while the sum is 30.

The square root of 7872231 is about 2805.7496324512. The cubic root of 7872231 is about 198.9295391228.

The spelling of 7872231 in words is "seven million, eight hundred seventy-two thousand, two hundred thirty-one".