135510031 has 4 divisors (see below), whose sum is σ = 135624064. Its totient is φ = 135396000.

The previous prime is 135510017. The next prime is 135510041. The reversal of 135510031 is 130015531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130015531 = 43 ⋅3023617.

It is a cyclic number.

It is not a de Polignac number, because 135510031 - 2⁹ = 135509519 is a prime.

It is a super-2 number, since 2×135510031² = 36725937003241922, 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 = 135509990 and 135510008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135510041) 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, 55215 + ... + 57616.

It is an arithmetic number, because the mean of its divisors is an integer number (33906016).

Almost surely, 2^135510031 is an apocalyptic number.

135510031 is a deficient number, since it is larger than the sum of its proper divisors (114033).

135510031 is a wasteful number, since it uses less digits than its factorization.

135510031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114032.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 135510031 is about 11640.8775871925. The cubic root of 135510031 is about 513.6380023167.

Adding to 135510031 its reverse (130015531), we get a palindrome (265525562).

The spelling of 135510031 in words is "one hundred thirty-five million, five hundred ten thousand, thirty-one".