223107932981 has 2 divisors, whose sum is σ = 223107932982. Its totient is φ = 223107932980.

The previous prime is 223107932947. The next prime is 223107932989. The reversal of 223107932981 is 189239701322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210099389956 + 13008543025 = 458366^2 + 114055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223107932981 is a prime.

It is a super-3 number, since 3×223107932981³ (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 (223107932989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111553966490 + 111553966491.

It is an arithmetic number, because the mean of its divisors is an integer number (111553966491).

Almost surely, 2^223107932981 is an apocalyptic number.

It is an amenable number.

223107932981 is a deficient number, since it is larger than the sum of its proper divisors (1).

223107932981 is an equidigital number, since it uses as much as digits as its factorization.

223107932981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 223107932981 in words is "two hundred twenty-three billion, one hundred seven million, nine hundred thirty-two thousand, nine hundred eighty-one".