228613831 has 2 divisors, whose sum is σ = 228613832. Its totient is φ = 228613830.

The previous prime is 228613799. The next prime is 228613837. The reversal of 228613831 is 138316822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228613831 - 2⁵ = 228613799 is a prime.

It is a super-2 number, since 2×228613831² = 104528567448993122, which contains 22 as substring.

It is equal to p_12570487 and since 228613831 and 12570487 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228613837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114306915 + 114306916.

It is an arithmetic number, because the mean of its divisors is an integer number (114306916).

Almost surely, 2^228613831 is an apocalyptic number.

228613831 is a deficient number, since it is larger than the sum of its proper divisors (1).

228613831 is an equidigital number, since it uses as much as digits as its factorization.

228613831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 228613831 is about 15119.9811838507. The cubic root of 228613831 is about 611.4592235178.

The spelling of 228613831 in words is "two hundred twenty-eight million, six hundred thirteen thousand, eight hundred thirty-one".