2143520087 has 2 divisors, whose sum is σ = 2143520088. Its totient is φ = 2143520086.

The previous prime is 2143520011. The next prime is 2143520101. The reversal of 2143520087 is 7800253412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143520087 is a prime.

It is a super-4 number, since 4×2143520087⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143520387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071760043 + 1071760044.

It is an arithmetic number, because the mean of its divisors is an integer number (1071760044).

Almost surely, 2^2143520087 is an apocalyptic number.

2143520087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143520087 is an equidigital number, since it uses as much as digits as its factorization.

2143520087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 2143520087 is about 46298.1650500320. The cubic root of 2143520087 is about 1289.3649272716.

Adding to 2143520087 its reverse (7800253412), we get a palindrome (9943773499).

The spelling of 2143520087 in words is "two billion, one hundred forty-three million, five hundred twenty thousand, eighty-seven".