135408731 has 2 divisors, whose sum is σ = 135408732. Its totient is φ = 135408730.

The previous prime is 135408703. The next prime is 135408787. The reversal of 135408731 is 137804531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135408731 - 2²² = 131214427 is a prime.

It is a super-2 number, since 2×135408731² = 36671048862060722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135408701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67704365 + 67704366.

It is an arithmetic number, because the mean of its divisors is an integer number (67704366).

Almost surely, 2^135408731 is an apocalyptic number.

135408731 is a deficient number, since it is larger than the sum of its proper divisors (1).

135408731 is an equidigital number, since it uses as much as digits as its factorization.

135408731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 135408731 is about 11636.5257272091. The cubic root of 135408731 is about 513.5099810429.

The spelling of 135408731 in words is "one hundred thirty-five million, four hundred eight thousand, seven hundred thirty-one".