135703973 has 8 divisors (see below), whose sum is σ = 139247640. Its totient is φ = 132171520.

The previous prime is 135703969. The next prime is 135703987. The reversal of 135703973 is 379307531.

It can be written as a sum of positive squares in 4 ways, for example, as 39212644 + 96491329 = 6262^2 + 9823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135703973 - 2² = 135703969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135703913) 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 7 ways as a sum of consecutive naturals, for example, 25313 + ... + 30201.

It is an arithmetic number, because the mean of its divisors is an integer number (17405955).

Almost surely, 2^135703973 is an apocalyptic number.

It is an amenable number.

135703973 is a deficient number, since it is larger than the sum of its proper divisors (3543667).

135703973 is an equidigital number, since it uses as much as digits as its factorization.

135703973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5607.

The product of its (nonzero) digits is 59535, while the sum is 38.

The square root of 135703973 is about 11649.2048226478. The cubic root of 135703973 is about 513.8829251340.

The spelling of 135703973 in words is "one hundred thirty-five million, seven hundred three thousand, nine hundred seventy-three".