228667031 has 2 divisors, whose sum is σ = 228667032. Its totient is φ = 228667030.

The previous prime is 228667027. The next prime is 228667039. The reversal of 228667031 is 130766822.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228667031 - 2² = 228667027 is a prime.

It is a super-2 number, since 2×228667031² = 104577222132709922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228666982 and 228667000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228667039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114333515 + 114333516.

It is an arithmetic number, because the mean of its divisors is an integer number (114333516).

Almost surely, 2^228667031 is an apocalyptic number.

228667031 is a deficient number, since it is larger than the sum of its proper divisors (1).

228667031 is an equidigital number, since it uses as much as digits as its factorization.

228667031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 228667031 is about 15121.7403429632. The cubic root of 228667031 is about 611.5066500851.

The spelling of 228667031 in words is "two hundred twenty-eight million, six hundred sixty-seven thousand, thirty-one".