228131941 has 2 divisors, whose sum is σ = 228131942. Its totient is φ = 228131940.

The previous prime is 228131933. The next prime is 228131947. The reversal of 228131941 is 149131822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131010916 + 97121025 = 11446^2 + 9855^2 .

It is a cyclic number.

It is not a de Polignac number, because 228131941 - 2³ = 228131933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228131947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114065970 + 114065971.

It is an arithmetic number, because the mean of its divisors is an integer number (114065971).

Almost surely, 2^228131941 is an apocalyptic number.

It is an amenable number.

228131941 is a deficient number, since it is larger than the sum of its proper divisors (1).

228131941 is an equidigital number, since it uses as much as digits as its factorization.

228131941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 228131941 is about 15104.0372417443. The cubic root of 228131941 is about 611.0292942061.

The spelling of 228131941 in words is "two hundred twenty-eight million, one hundred thirty-one thousand, nine hundred forty-one".