133387 has 2 divisors, whose sum is σ = 133388. Its totient is φ = 133386.

The previous prime is 133379. The next prime is 133391. The reversal of 133387 is 783331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133387 - 2³ = 133379 is a prime.

It is a pancake number, because a pancake can be divided into 133387 parts by 516 straight cuts.

It is not a weakly prime, because it can be changed into another prime (133327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66693 + 66694.

It is an arithmetic number, because the mean of its divisors is an integer number (66694).

2¹³³³⁸⁷ is an apocalyptic number.

133387 is a deficient number, since it is larger than the sum of its proper divisors (1).

133387 is an equidigital number, since it uses as much as digits as its factorization.

133387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 25.

The square root of 133387 is about 365.2218503869. The cubic root of 133387 is about 51.0941487856.

The spelling of 133387 in words is "one hundred thirty-three thousand, three hundred eighty-seven".