2312780887 has 2 divisors, whose sum is σ = 2312780888. Its totient is φ = 2312780886.

The previous prime is 2312780837. The next prime is 2312780891. The reversal of 2312780887 is 7880872132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2312780887 - 2²⁷ = 2178563159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2312780837) 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, 1156390443 + 1156390444.

It is an arithmetic number, because the mean of its divisors is an integer number (1156390444).

Almost surely, 2^2312780887 is an apocalyptic number.

2312780887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312780887 is an equidigital number, since it uses as much as digits as its factorization.

2312780887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 2312780887 is about 48091.3805894570. The cubic root of 2312780887 is about 1322.4466573444.

The spelling of 2312780887 in words is "two billion, three hundred twelve million, seven hundred eighty thousand, eight hundred eighty-seven".