2187457313 has 2 divisors, whose sum is σ = 2187457314. Its totient is φ = 2187457312.

The previous prime is 2187457291. The next prime is 2187457331. The reversal of 2187457313 is 3137547812.

Together with next prime (2187457331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1344542224 + 842915089 = 36668^2 + 29033^2 .

It is a cyclic number.

It is not a de Polignac number, because 2187457313 - 2¹⁰ = 2187456289 is a prime.

It is not a weakly prime, because it can be changed into another prime (2187457333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093728656 + 1093728657.

It is an arithmetic number, because the mean of its divisors is an integer number (1093728657).

Almost surely, 2^2187457313 is an apocalyptic number.

It is an amenable number.

2187457313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187457313 is an equidigital number, since it uses as much as digits as its factorization.

2187457313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 41.

The square root of 2187457313 is about 46770.2609892226. The cubic root of 2187457313 is about 1298.1150815223.

The spelling of 2187457313 in words is "two billion, one hundred eighty-seven million, four hundred fifty-seven thousand, three hundred thirteen".