12309193 has 4 divisors (see below), whose sum is σ = 13256068. Its totient is φ = 11362320.

The previous prime is 12309191. The next prime is 12309233. The reversal of 12309193 is 39190321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4032064 + 8277129 = 2008^2 + 2877^2 .

It is a cyclic number.

It is not a de Polignac number, because 12309193 - 2¹ = 12309191 is a prime.

It is a super-2 number, since 2×12309193² = 303032464622498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12309191) 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, 473418 + ... + 473443.

It is an arithmetic number, because the mean of its divisors is an integer number (3314017).

Almost surely, 2^12309193 is an apocalyptic number.

12309193 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12309193 is a deficient number, since it is larger than the sum of its proper divisors (946875).

12309193 is an equidigital number, since it uses as much as digits as its factorization.

12309193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946874.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 12309193 is about 3508.4459522700. The cubic root of 12309193 is about 230.8925182279.

It can be divided in two parts, 1230 and 9193, that multiplied together give a triangular number (11307390 = T₄₇₅₅).

The spelling of 12309193 in words is "twelve million, three hundred nine thousand, one hundred ninety-three".