12480311 has 4 divisors (see below), whose sum is σ = 12609072. Its totient is φ = 12351552.

The previous prime is 12480269. The next prime is 12480313. The reversal of 12480311 is 11308421.

12480311 = T₄₅₈ + T₄₅₉ + ... + T₅₅₄.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11308421 = 37 ⋅305633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12480311 is a prime.

It is a super-3 number, since 3×12480311³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12480313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64235 + ... + 64428.

It is an arithmetic number, because the mean of its divisors is an integer number (3152268).

Almost surely, 2^12480311 is an apocalyptic number.

12480311 is a deficient number, since it is larger than the sum of its proper divisors (128761).

12480311 is an equidigital number, since it uses as much as digits as its factorization.

12480311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128760.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 12480311 is about 3532.7483635266. The cubic root of 12480311 is about 231.9575266579.

Adding to 12480311 its reverse (11308421), we get a palindrome (23788732).

The spelling of 12480311 in words is "twelve million, four hundred eighty thousand, three hundred eleven".