136611031 has 8 divisors (see below), whose sum is σ = 145407744. Its totient is φ = 127898880.

The previous prime is 136611023. The next prime is 136611037. The reversal of 136611031 is 130116631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136611031 - 2³ = 136611023 is a prime.

It is a super-2 number, since 2×136611031² = 37325147581765922, 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 = 136610993 and 136611011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136611037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17790 + ... + 24283.

It is an arithmetic number, because the mean of its divisors is an integer number (18175968).

Almost surely, 2^136611031 is an apocalyptic number.

136611031 is a deficient number, since it is larger than the sum of its proper divisors (8796713).

136611031 is a wasteful number, since it uses less digits than its factorization.

136611031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42281.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 136611031 is about 11688.0721678128. The cubic root of 136611031 is about 515.0253307049.

Adding to 136611031 its reverse (130116631), we get a palindrome (266727662).

The spelling of 136611031 in words is "one hundred thirty-six million, six hundred eleven thousand, thirty-one".