228752831 has 4 divisors (see below), whose sum is σ = 229208112. Its totient is φ = 228297552.

The previous prime is 228752809. The next prime is 228752857. The reversal of 228752831 is 138257822.

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 228752831 - 2¹⁴ = 228736447 is a prime.

It is a super-2 number, since 2×228752831² = 104655715381029122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228752801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226886 + ... + 227891.

It is an arithmetic number, because the mean of its divisors is an integer number (57302028).

Almost surely, 2^228752831 is an apocalyptic number.

228752831 is a deficient number, since it is larger than the sum of its proper divisors (455281).

228752831 is an equidigital number, since it uses as much as digits as its factorization.

228752831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455280.

The product of its digits is 53760, while the sum is 38.

The square root of 228752831 is about 15124.5770519377. The cubic root of 228752831 is about 611.5831233011.

The spelling of 228752831 in words is "two hundred twenty-eight million, seven hundred fifty-two thousand, eight hundred thirty-one".