135403 has 2 divisors, whose sum is σ = 135404. Its totient is φ = 135402.

The previous prime is 135391. The next prime is 135409. The reversal of 135403 is 304531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135403 is a prime.

It is not a weakly prime, because it can be changed into another prime (135409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67701 + 67702.

It is an arithmetic number, because the mean of its divisors is an integer number (67702).

2¹³⁵⁴⁰³ is an apocalyptic number.

135403 is a deficient number, since it is larger than the sum of its proper divisors (1).

135403 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 8 representation: 135403 = (410353)₈.

135403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 135403 is about 367.9714662851. The cubic root of 135403 is about 51.3502736391.

Adding to 135403 its reverse (304531), we get a palindrome (439934).

The spelling of 135403 in words is "one hundred thirty-five thousand, four hundred three".