101312987 has 2 divisors, whose sum is σ = 101312988. Its totient is φ = 101312986.

The previous prime is 101312969. The next prime is 101313011. The reversal of 101312987 is 789213101.

It is a weak prime.

It is an emirp because it is prime and its reverse (789213101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101312987 - 2⁶ = 101312923 is a prime.

It is a Chen prime.

It is equal to p_5832680 and since 101312987 and 5832680 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (101312917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50656493 + 50656494.

It is an arithmetic number, because the mean of its divisors is an integer number (50656494).

Almost surely, 2^101312987 is an apocalyptic number.

101312987 is a deficient number, since it is larger than the sum of its proper divisors (1).

101312987 is an equidigital number, since it uses as much as digits as its factorization.

101312987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 101312987 is about 10065.4352613287. The cubic root of 101312987 is about 466.1815053664.

The spelling of 101312987 in words is "one hundred one million, three hundred twelve thousand, nine hundred eighty-seven".