3091961 has 2 divisors, whose sum is σ = 3091962. Its totient is φ = 3091960.

The previous prime is 3091939. The next prime is 3091973. The reversal of 3091961 is 1691903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1755625 + 1336336 = 1325^2 + 1156^2 .

It is a cyclic number.

It is not a de Polignac number, because 3091961 - 2⁶ = 3091897 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3091901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1545980 + 1545981.

It is an arithmetic number, because the mean of its divisors is an integer number (1545981).

Almost surely, 2^3091961 is an apocalyptic number.

It is an amenable number.

3091961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3091961 is an equidigital number, since it uses as much as digits as its factorization.

3091961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 3091961 is about 1758.3972816176. The cubic root of 3091961 is about 145.6838250805.

The spelling of 3091961 in words is "three million, ninety-one thousand, nine hundred sixty-one".