230628831 has 4 divisors (see below), whose sum is σ = 307505112. Its totient is φ = 153752552.

The previous prime is 230628829. The next prime is 230628833. The reversal of 230628831 is 138826032.

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

It is an interprime number because it is at equal distance from previous prime (230628829) and next prime (230628833).

It is a cyclic number.

It is not a de Polignac number, because 230628831 - 2¹ = 230628829 is a prime.

It is a super-2 number, since 2×230628831² = 106379315376853122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 230628792 and 230628801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230628833) 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, 38438136 + ... + 38438141.

It is an arithmetic number, because the mean of its divisors is an integer number (76876278).

Almost surely, 2^230628831 is an apocalyptic number.

230628831 is a deficient number, since it is larger than the sum of its proper divisors (76876281).

230628831 is an equidigital number, since it uses as much as digits as its factorization.

230628831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76876280.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 230628831 is about 15186.4686810331. The cubic root of 230628831 is about 613.2504363454.

The spelling of 230628831 in words is "two hundred thirty million, six hundred twenty-eight thousand, eight hundred thirty-one".