601231987 has 2 divisors, whose sum is σ = 601231988. Its totient is φ = 601231986.

The previous prime is 601231963. The next prime is 601231993. The reversal of 601231987 is 789132106.

601231987 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 a de Polignac number, because none of the positive numbers 2^k-601231987 is a prime.

It is a super-2 number, since 2×601231987² = 722959804383936338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (601231087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300615993 + 300615994.

It is an arithmetic number, because the mean of its divisors is an integer number (300615994).

Almost surely, 2^601231987 is an apocalyptic number.

601231987 is a deficient number, since it is larger than the sum of its proper divisors (1).

601231987 is an equidigital number, since it uses as much as digits as its factorization.

601231987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 601231987 is about 24520.0323613163. The cubic root of 601231987 is about 844.0095473527.

The spelling of 601231987 in words is "six hundred one million, two hundred thirty-one thousand, nine hundred eighty-seven".