2961318691 has 2 divisors, whose sum is σ = 2961318692. Its totient is φ = 2961318690.

The previous prime is 2961318671. The next prime is 2961318727. The reversal of 2961318691 is 1968131692.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2961318691 - 2²⁷ = 2827100963 is a prime.

It is not a weakly prime, because it can be changed into another prime (2961318611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1480659345 + 1480659346.

It is an arithmetic number, because the mean of its divisors is an integer number (1480659346).

Almost surely, 2^2961318691 is an apocalyptic number.

2961318691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2961318691 is an equidigital number, since it uses as much as digits as its factorization.

2961318691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 46.

The square root of 2961318691 is about 54417.9996967915. Note that the first 3 decimals coincide. The cubic root of 2961318691 is about 1436.0240584510.

The spelling of 2961318691 in words is "two billion, nine hundred sixty-one million, three hundred eighteen thousand, six hundred ninety-one".