3312099781 has 2 divisors, whose sum is σ = 3312099782. Its totient is φ = 3312099780.

The previous prime is 3312099719. The next prime is 3312099787. The reversal of 3312099781 is 1879902133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2604060900 + 708038881 = 51030^2 + 26609^2 .

It is a cyclic number.

It is not a de Polignac number, because 3312099781 - 2²⁵ = 3278545349 is a prime.

It is a super-2 number, since 2×3312099781² = 21940009918600495922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3312099787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1656049890 + 1656049891.

It is an arithmetic number, because the mean of its divisors is an integer number (1656049891).

Almost surely, 2^3312099781 is an apocalyptic number.

It is an amenable number.

3312099781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3312099781 is an equidigital number, since it uses as much as digits as its factorization.

3312099781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 3312099781 is about 57550.8451805879. The cubic root of 3312099781 is about 1490.6229518325.

The spelling of 3312099781 in words is "three billion, three hundred twelve million, ninety-nine thousand, seven hundred eighty-one".