228106831 has 2 divisors, whose sum is σ = 228106832. Its totient is φ = 228106830.

The previous prime is 228106819. The next prime is 228106861. The reversal of 228106831 is 138601822.

228106831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228106831 is a prime.

It is a super-2 number, since 2×228106831² = 104065452697725122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228106793 and 228106802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228106861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114053415 + 114053416.

It is an arithmetic number, because the mean of its divisors is an integer number (114053416).

Almost surely, 2^228106831 is an apocalyptic number.

228106831 is a deficient number, since it is larger than the sum of its proper divisors (1).

228106831 is an equidigital number, since it uses as much as digits as its factorization.

228106831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 228106831 is about 15103.2059841611. The cubic root of 228106831 is about 611.0068751498.

The spelling of 228106831 in words is "two hundred twenty-eight million, one hundred six thousand, eight hundred thirty-one".