135223373 has 2 divisors, whose sum is σ = 135223374. Its totient is φ = 135223372.

The previous prime is 135223349. The next prime is 135223379. The reversal of 135223373 is 373322531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130804969 + 4418404 = 11437^2 + 2102^2 .

It is a cyclic number.

It is not a de Polignac number, because 135223373 - 2²⁰ = 134174797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135223379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67611686 + 67611687.

It is an arithmetic number, because the mean of its divisors is an integer number (67611687).

Almost surely, 2^135223373 is an apocalyptic number.

It is an amenable number.

135223373 is a deficient number, since it is larger than the sum of its proper divisors (1).

135223373 is an equidigital number, since it uses as much as digits as its factorization.

135223373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 29.

The square root of 135223373 is about 11628.5585091188. The cubic root of 135223373 is about 513.2755632502.

The spelling of 135223373 in words is "one hundred thirty-five million, two hundred twenty-three thousand, three hundred seventy-three".