133351 has 2 divisors, whose sum is σ = 133352. Its totient is φ = 133350.

The previous prime is 133349. The next prime is 133379. The reversal of 133351 is 153331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133351 - 2¹ = 133349 is a prime.

Together with 133349, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66675 + 66676.

It is an arithmetic number, because the mean of its divisors is an integer number (66676).

2¹³³³⁵¹ is an apocalyptic number.

133351 is a deficient number, since it is larger than the sum of its proper divisors (1).

133351 is an equidigital number, since it uses as much as digits as its factorization.

133351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135, while the sum is 16.

The square root of 133351 is about 365.1725619485. The cubic root of 133351 is about 51.0895517488.

Adding to 133351 its reverse (153331), we get a palindrome (286682).

It can be divided in two parts, 133 and 351, that added together give a palindrome (484).

The spelling of 133351 in words is "one hundred thirty-three thousand, three hundred fifty-one".