136723511 has 2 divisors, whose sum is σ = 136723512. Its totient is φ = 136723510.

The previous prime is 136723507. The next prime is 136723529. The reversal of 136723511 is 115327631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136723511 - 2² = 136723507 is a prime.

It is a Chen prime.

It is equal to p_7737500 and since 136723511 and 7737500 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136723211) 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 as a sum of consecutive naturals, namely, 68361755 + 68361756.

It is an arithmetic number, because the mean of its divisors is an integer number (68361756).

Almost surely, 2^136723511 is an apocalyptic number.

136723511 is a deficient number, since it is larger than the sum of its proper divisors (1).

136723511 is an equidigital number, since it uses as much as digits as its factorization.

136723511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 29.

The square root of 136723511 is about 11692.8829208198. The cubic root of 136723511 is about 515.1666422739.

The spelling of 136723511 in words is "one hundred thirty-six million, seven hundred twenty-three thousand, five hundred eleven".