136523042231 has 2 divisors, whose sum is σ = 136523042232. Its totient is φ = 136523042230.

The previous prime is 136523042203. The next prime is 136523042267. The reversal of 136523042231 is 132240325631.

It is a weak prime.

It is an emirp because it is prime and its reverse (132240325631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136523042231 is a prime.

It is a super-2 number, since 2×136523042231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136523042431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68261521115 + 68261521116.

It is an arithmetic number, because the mean of its divisors is an integer number (68261521116).

Almost surely, 2^136523042231 is an apocalyptic number.

136523042231 is a deficient number, since it is larger than the sum of its proper divisors (1).

136523042231 is an equidigital number, since it uses as much as digits as its factorization.

136523042231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 136523042231 its reverse (132240325631), we get a palindrome (268763367862).

The spelling of 136523042231 in words is "one hundred thirty-six billion, five hundred twenty-three million, forty-two thousand, two hundred thirty-one".