12351145 has 4 divisors (see below), whose sum is σ = 14821380. Its totient is φ = 9880912.

The previous prime is 12351133. The next prime is 12351193. The reversal of 12351145 is 54115321.

It is a happy number.

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 9406489 + 2944656 = 3067^2 + 1716^2 .

It is a cyclic number.

It is not a de Polignac number, because 12351145 - 2²¹ = 10253993 is a prime.

It is a super-2 number, since 2×12351145² = 305101565622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1235110 + ... + 1235119.

It is an arithmetic number, because the mean of its divisors is an integer number (3705345).

Almost surely, 2^12351145 is an apocalyptic number.

It is an amenable number.

12351145 is a deficient number, since it is larger than the sum of its proper divisors (2470235).

12351145 is an equidigital number, since it uses as much as digits as its factorization.

12351145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470234.

The product of its digits is 600, while the sum is 22.

The square root of 12351145 is about 3514.4195822355. The cubic root of 12351145 is about 231.1545288884.

Adding to 12351145 its reverse (54115321), we get a palindrome (66466466).

The spelling of 12351145 in words is "twelve million, three hundred fifty-one thousand, one hundred forty-five".