133100987 has 2 divisors, whose sum is σ = 133100988. Its totient is φ = 133100986.

The previous prime is 133100971. The next prime is 133101019. The reversal of 133100987 is 789001331.

It is an a-pointer prime, because the next prime (133101019) can be obtained adding 133100987 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133100987 - 2⁴ = 133100971 is a prime.

It is not a weakly prime, because it can be changed into another prime (133100917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66550493 + 66550494.

It is an arithmetic number, because the mean of its divisors is an integer number (66550494).

Almost surely, 2^133100987 is an apocalyptic number.

133100987 is a deficient number, since it is larger than the sum of its proper divisors (1).

133100987 is an equidigital number, since it uses as much as digits as its factorization.

133100987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 133100987 is about 11536.9401055913. The cubic root of 133100987 is about 510.5760337461.

The spelling of 133100987 in words is "one hundred thirty-three million, one hundred thousand, nine hundred eighty-seven".