136218031 has 8 divisors (see below), whose sum is σ = 139809600. Its totient is φ = 132639360.

The previous prime is 136218001. The next prime is 136218037. The reversal of 136218031 is 130812631.

136218031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 136218031 - 2¹¹ = 136215983 is a prime.

It is a super-2 number, since 2×136218031² = 37110703939033922, 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 = 136217987 and 136218005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136218037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20410 + ... + 26248.

It is an arithmetic number, because the mean of its divisors is an integer number (17476200).

Almost surely, 2^136218031 is an apocalyptic number.

136218031 is a deficient number, since it is larger than the sum of its proper divisors (3591569).

136218031 is an equidigital number, since it uses as much as digits as its factorization.

136218031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6449.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 136218031 is about 11671.2480480881. The cubic root of 136218031 is about 514.5309846875.

The spelling of 136218031 in words is "one hundred thirty-six million, two hundred eighteen thousand, thirty-one".