135911031 has 4 divisors (see below), whose sum is σ = 181214712. Its totient is φ = 90607352.

The previous prime is 135911021. The next prime is 135911051. The reversal of 135911031 is 130119531.

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 135911031 - 2⁶ = 135910967 is a prime.

It is a super-2 number, since 2×135911031² = 36943616694965922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135910992 and 135911010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135911011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22651836 + ... + 22651841.

It is an arithmetic number, because the mean of its divisors is an integer number (45303678).

Almost surely, 2^135911031 is an apocalyptic number.

135911031 is a deficient number, since it is larger than the sum of its proper divisors (45303681).

135911031 is an equidigital number, since it uses as much as digits as its factorization.

135911031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45303680.

The product of its (nonzero) digits is 405, while the sum is 24.

The square root of 135911031 is about 11658.0886512327. The cubic root of 135911031 is about 514.1441542813.

The spelling of 135911031 in words is "one hundred thirty-five million, nine hundred eleven thousand, thirty-one".