2102312987 has 2 divisors, whose sum is σ = 2102312988. Its totient is φ = 2102312986.

The previous prime is 2102312983. The next prime is 2102313001. The reversal of 2102312987 is 7892132012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102312987 - 2² = 2102312983 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102312983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051156493 + 1051156494.

It is an arithmetic number, because the mean of its divisors is an integer number (1051156494).

Almost surely, 2^2102312987 is an apocalyptic number.

2102312987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102312987 is an equidigital number, since it uses as much as digits as its factorization.

2102312987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 2102312987 is about 45850.9867614646. The cubic root of 2102312987 is about 1281.0491453317.

Adding to 2102312987 its reverse (7892132012), we get a palindrome (9994444999).

The spelling of 2102312987 in words is "two billion, one hundred two million, three hundred twelve thousand, nine hundred eighty-seven".