3261320977 has 2 divisors, whose sum is σ = 3261320978. Its totient is φ = 3261320976.

The previous prime is 3261320963. The next prime is 3261320981. The reversal of 3261320977 is 7790231623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2938615681 + 322705296 = 54209^2 + 17964^2 .

It is a cyclic number.

It is not a de Polignac number, because 3261320977 - 2¹⁵ = 3261288209 is a prime.

It is not a weakly prime, because it can be changed into another prime (3261321977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630660488 + 1630660489.

It is an arithmetic number, because the mean of its divisors is an integer number (1630660489).

Almost surely, 2^3261320977 is an apocalyptic number.

It is an amenable number.

3261320977 is a deficient number, since it is larger than the sum of its proper divisors (1).

3261320977 is an equidigital number, since it uses as much as digits as its factorization.

3261320977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 3261320977 is about 57107.9764743945. The cubic root of 3261320977 is about 1482.9659563983.

The spelling of 3261320977 in words is "three billion, two hundred sixty-one million, three hundred twenty thousand, nine hundred seventy-seven".