3312299981 has 2 divisors, whose sum is σ = 3312299982. Its totient is φ = 3312299980.

The previous prime is 3312299959. The next prime is 3312299993. The reversal of 3312299981 is 1899922133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1953198025 + 1359101956 = 44195^2 + 36866^2 .

It is a cyclic number.

It is not a de Polignac number, because 3312299981 - 2¹⁸ = 3312037837 is a prime.

It is a super-2 number, since 2×3312299981² = 21942662328265200722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3312299381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1656149990 + 1656149991.

It is an arithmetic number, because the mean of its divisors is an integer number (1656149991).

Almost surely, 2^3312299981 is an apocalyptic number.

It is an amenable number.

3312299981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3312299981 is an equidigital number, since it uses as much as digits as its factorization.

3312299981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 47.

The square root of 3312299981 is about 57552.5844858422. The cubic root of 3312299981 is about 1490.6529848148.

The spelling of 3312299981 in words is "three billion, three hundred twelve million, two hundred ninety-nine thousand, nine hundred eighty-one".