135033631 has 4 divisors (see below), whose sum is σ = 138173992. Its totient is φ = 131893272.

The previous prime is 135033617. The next prime is 135033671. The reversal of 135033631 is 136330531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135033631 - 2¹¹ = 135031583 is a prime.

It is a super-2 number, since 2×135033631² = 36468163002088322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135033596 and 135033605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135033611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1570116 + ... + 1570201.

It is an arithmetic number, because the mean of its divisors is an integer number (34543498).

Almost surely, 2^135033631 is an apocalyptic number.

135033631 is a deficient number, since it is larger than the sum of its proper divisors (3140361).

135033631 is an equidigital number, since it uses as much as digits as its factorization.

135033631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140360.

The product of its (nonzero) digits is 2430, while the sum is 25.

The square root of 135033631 is about 11620.3971963096. The cubic root of 135033631 is about 513.0353791336.

The spelling of 135033631 in words is "one hundred thirty-five million, thirty-three thousand, six hundred thirty-one".