135321373 has 4 divisors (see below), whose sum is σ = 147623328. Its totient is φ = 123019420.

The previous prime is 135321317. The next prime is 135321409. The reversal of 135321373 is 373123531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135321373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135321313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6150961 + ... + 6150982.

It is an arithmetic number, because the mean of its divisors is an integer number (36905832).

Almost surely, 2^135321373 is an apocalyptic number.

It is an amenable number.

135321373 is a deficient number, since it is larger than the sum of its proper divisors (12301955).

135321373 is a wasteful number, since it uses less digits than its factorization.

135321373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12301954.

The product of its digits is 5670, while the sum is 28.

The square root of 135321373 is about 11632.7715098338. The cubic root of 135321373 is about 513.3995281572.

The spelling of 135321373 in words is "one hundred thirty-five million, three hundred twenty-one thousand, three hundred seventy-three".