136678311 has 48 divisors (see below), whose sum is σ = 247822848. Its totient is φ = 70516800.

The previous prime is 136678309. The next prime is 136678427. The reversal of 136678311 is 113876631.

136678311 is a nontrivial binomial coefficient, being equal to C(16534, 2).

It is not a de Polignac number, because 136678311 - 2¹ = 136678309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136678211) 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 47 ways as a sum of consecutive naturals, for example, 115141 + ... + 116321.

It is an arithmetic number, because the mean of its divisors is an integer number (5162976).

Almost surely, 2^136678311 is an apocalyptic number.

136678311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136678311 is the 16533-rd triangular number and also the 8267-th hexagonal number.

136678311 is a deficient number, since it is larger than the sum of its proper divisors (111144537).

136678311 is a wasteful number, since it uses less digits than its factorization.

136678311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1369 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 136678311 is about 11690.9499614018. The cubic root of 136678311 is about 515.1098656484.

The spelling of 136678311 in words is "one hundred thirty-six million, six hundred seventy-eight thousand, three hundred eleven".