223210312981 has 2 divisors, whose sum is σ = 223210312982. Its totient is φ = 223210312980.

The previous prime is 223210312939. The next prime is 223210313017. The reversal of 223210312981 is 189213012322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195908038225 + 27302274756 = 442615^2 + 165234^2 .

It is a cyclic number.

It is not a de Polignac number, because 223210312981 - 2¹¹ = 223210310933 is a prime.

It is a super-3 number, since 3×223210312981³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223210312931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111605156490 + 111605156491.

It is an arithmetic number, because the mean of its divisors is an integer number (111605156491).

Almost surely, 2^223210312981 is an apocalyptic number.

It is an amenable number.

223210312981 is a deficient number, since it is larger than the sum of its proper divisors (1).

223210312981 is an equidigital number, since it uses as much as digits as its factorization.

223210312981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 223210312981 in words is "two hundred twenty-three billion, two hundred ten million, three hundred twelve thousand, nine hundred eighty-one".