100231001987 has 2 divisors, whose sum is σ = 100231001988. Its totient is φ = 100231001986.

The previous prime is 100231001977. The next prime is 100231002007. The reversal of 100231001987 is 789100132001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100231001987 - 2⁴ = 100231001971 is a prime.

It is not a weakly prime, because it can be changed into another prime (100231001977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50115500993 + 50115500994.

It is an arithmetic number, because the mean of its divisors is an integer number (50115500994).

Almost surely, 2^100231001987 is an apocalyptic number.

100231001987 is a deficient number, since it is larger than the sum of its proper divisors (1).

100231001987 is an equidigital number, since it uses as much as digits as its factorization.

100231001987 is an evil number, because the sum of its binary digits is even.

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

Adding to 100231001987 its reverse (789100132001), we get a palindrome (889331133988).

The spelling of 100231001987 in words is "one hundred billion, two hundred thirty-one million, one thousand, nine hundred eighty-seven".