136043431 has 2 divisors, whose sum is σ = 136043432. Its totient is φ = 136043430.

The previous prime is 136043429. The next prime is 136043441. The reversal of 136043431 is 134340631.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136043431 - 2¹ = 136043429 is a prime.

It is a super-2 number, since 2×136043431² = 37015630236503522, which contains 22 as substring.

Together with 136043429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 136043396 and 136043405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136043441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68021715 + 68021716.

It is an arithmetic number, because the mean of its divisors is an integer number (68021716).

Almost surely, 2^136043431 is an apocalyptic number.

136043431 is a deficient number, since it is larger than the sum of its proper divisors (1).

136043431 is an equidigital number, since it uses as much as digits as its factorization.

136043431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 136043431 is about 11663.7657298147. The cubic root of 136043431 is about 514.3110541343.

The spelling of 136043431 in words is "one hundred thirty-six million, forty-three thousand, four hundred thirty-one".