2991512723 has 2 divisors, whose sum is σ = 2991512724. Its totient is φ = 2991512722.

The previous prime is 2991512677. The next prime is 2991512737. The reversal of 2991512723 is 3272151992.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2991512723 - 2⁶ = 2991512659 is a prime.

It is not a weakly prime, because it can be changed into another prime (2991512743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495756361 + 1495756362.

It is an arithmetic number, because the mean of its divisors is an integer number (1495756362).

Almost surely, 2^2991512723 is an apocalyptic number.

2991512723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991512723 is an equidigital number, since it uses as much as digits as its factorization.

2991512723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 2991512723 is about 54694.7229904312. The cubic root of 2991512723 is about 1440.8881999510. Note that the first 3 decimals are identical.

The spelling of 2991512723 in words is "two billion, nine hundred ninety-one million, five hundred twelve thousand, seven hundred twenty-three".