135038831 has 4 divisors (see below), whose sum is σ = 136888752. Its totient is φ = 133188912.

The previous prime is 135038809. The next prime is 135038857. The reversal of 135038831 is 138830531.

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 135038831 - 2⁶ = 135038767 is a prime.

It is a super-2 number, since 2×135038831² = 36470971755693122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135038801) 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, 924851 + ... + 924996.

It is an arithmetic number, because the mean of its divisors is an integer number (34222188).

Almost surely, 2^135038831 is an apocalyptic number.

135038831 is a deficient number, since it is larger than the sum of its proper divisors (1849921).

135038831 is an equidigital number, since it uses as much as digits as its factorization.

135038831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849920.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 135038831 is about 11620.6209386590. The cubic root of 135038831 is about 513.0419645294.

The spelling of 135038831 in words is "one hundred thirty-five million, thirty-eight thousand, eight hundred thirty-one".