136212511 has 4 divisors (see below), whose sum is σ = 137936800. Its totient is φ = 134488224.

The previous prime is 136212493. The next prime is 136212521. The reversal of 136212511 is 115212631.

It is a happy number.

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 136212511 - 2¹³ = 136204319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136212521) 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, 862026 + ... + 862183.

It is an arithmetic number, because the mean of its divisors is an integer number (34484200).

Almost surely, 2^136212511 is an apocalyptic number.

136212511 is a deficient number, since it is larger than the sum of its proper divisors (1724289).

136212511 is an equidigital number, since it uses as much as digits as its factorization.

136212511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724288.

The product of its digits is 360, while the sum is 22.

The square root of 136212511 is about 11671.0115671265. The cubic root of 136212511 is about 514.5240344344.

The spelling of 136212511 in words is "one hundred thirty-six million, two hundred twelve thousand, five hundred eleven".