12491343 has 6 divisors (see below), whose sum is σ = 18043064. Its totient is φ = 8327556.

The previous prime is 12491333. The next prime is 12491351. The reversal of 12491343 is 34319421.

It is a de Polignac number, because none of the positive numbers 2^k-12491343 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 (12491333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 693955 + ... + 693972.

Almost surely, 2^12491343 is an apocalyptic number.

12491343 is a deficient number, since it is larger than the sum of its proper divisors (5551721).

12491343 is a wasteful number, since it uses less digits than its factorization.

12491343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387933 (or 1387930 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 12491343 is about 3534.3094092057. The cubic root of 12491343 is about 232.0258529949.

The spelling of 12491343 in words is "twelve million, four hundred ninety-one thousand, three hundred forty-three".