2389987231 has 2 divisors, whose sum is σ = 2389987232. Its totient is φ = 2389987230.

The previous prime is 2389987189. The next prime is 2389987261. The reversal of 2389987231 is 1327899832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2389987231 - 2²³ = 2381598623 is a prime.

It is a super-2 number, since 2×2389987231² = 11424077928686094722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2389987261) 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, 1194993615 + 1194993616.

It is an arithmetic number, because the mean of its divisors is an integer number (1194993616).

Almost surely, 2^2389987231 is an apocalyptic number.

2389987231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2389987231 is an equidigital number, since it uses as much as digits as its factorization.

2389987231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 2389987231 is about 48887.4956507285. The cubic root of 2389987231 is about 1337.0013944436.

The spelling of 2389987231 in words is "two billion, three hundred eighty-nine million, nine hundred eighty-seven thousand, two hundred thirty-one".