2322011981 has 2 divisors, whose sum is σ = 2322011982. Its totient is φ = 2322011980.

The previous prime is 2322011971. The next prime is 2322012037. The reversal of 2322011981 is 1891102232.

2322011981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2291153956 + 30858025 = 47866^2 + 5555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2322011981 is a prime.

It is a super-2 number, since 2×2322011981² = 10783479279815088722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2322011971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1161005990 + 1161005991.

It is an arithmetic number, because the mean of its divisors is an integer number (1161005991).

Almost surely, 2^2322011981 is an apocalyptic number.

It is an amenable number.

2322011981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2322011981 is an equidigital number, since it uses as much as digits as its factorization.

2322011981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 2322011981 is about 48187.2595298799. The cubic root of 2322011981 is about 1324.2037662564.

The spelling of 2322011981 in words is "two billion, three hundred twenty-two million, eleven thousand, nine hundred eighty-one".