226982981 has 2 divisors, whose sum is σ = 226982982. Its totient is φ = 226982980.

The previous prime is 226982957. The next prime is 226982983. The reversal of 226982981 is 189289622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168766081 + 58216900 = 12991^2 + 7630^2 .

It is a cyclic number.

It is not a de Polignac number, because 226982981 - 2¹⁰ = 226981957 is a prime.

It is a super-2 number, since 2×226982981² = 103042547327292722, which contains 22 as substring.

Together with 226982983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226982983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113491490 + 113491491.

It is an arithmetic number, because the mean of its divisors is an integer number (113491491).

Almost surely, 2^226982981 is an apocalyptic number.

It is an amenable number.

226982981 is a deficient number, since it is larger than the sum of its proper divisors (1).

226982981 is an equidigital number, since it uses as much as digits as its factorization.

226982981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 47.

The square root of 226982981 is about 15065.9543673808. The cubic root of 226982981 is about 610.0017746074.

The spelling of 226982981 in words is "two hundred twenty-six million, nine hundred eighty-two thousand, nine hundred eighty-one".