228713437 has 2 divisors, whose sum is σ = 228713438. Its totient is φ = 228713436.

The previous prime is 228713383. The next prime is 228713477. The reversal of 228713437 is 734317822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225870841 + 2842596 = 15029^2 + 1686^2 .

It is a cyclic number.

It is not a de Polignac number, because 228713437 - 2¹¹ = 228711389 is a prime.

It is a super-3 number, since 3×228713437³ (a number of 26 digits) contains 333 as substring.

It is equal to p_12575746 and since 228713437 and 12575746 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 228713396 and 228713405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228713477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114356718 + 114356719.

It is an arithmetic number, because the mean of its divisors is an integer number (114356719).

Almost surely, 2^228713437 is an apocalyptic number.

It is an amenable number.

228713437 is a deficient number, since it is larger than the sum of its proper divisors (1).

228713437 is an equidigital number, since it uses as much as digits as its factorization.

228713437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 37.

The square root of 228713437 is about 15123.2746784551. The cubic root of 228713437 is about 611.5480139524.

The spelling of 228713437 in words is "two hundred twenty-eight million, seven hundred thirteen thousand, four hundred thirty-seven".