10212731987 has 2 divisors, whose sum is σ = 10212731988. Its totient is φ = 10212731986.

The previous prime is 10212731983. The next prime is 10212731989. The reversal of 10212731987 is 78913721201.

It is a happy number.

10212731987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10212731987 - 2² = 10212731983 is a prime.

Together with 10212731989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10212731981) 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, 5106365993 + 5106365994.

It is an arithmetic number, because the mean of its divisors is an integer number (5106365994).

Almost surely, 2^10212731987 is an apocalyptic number.

10212731987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212731987 is an equidigital number, since it uses as much as digits as its factorization.

10212731987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 10212731987 in words is "ten billion, two hundred twelve million, seven hundred thirty-one thousand, nine hundred eighty-seven".