12543031 has 8 divisors (see below), whose sum is σ = 12939264. Its totient is φ = 12152280.

The previous prime is 12542989. The next prime is 12543053. The reversal of 12543031 is 13034521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12543031 is a prime.

It is a super-2 number, since 2×12543031² = 314655253333922, which contains 22 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 (12543061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3546 + ... + 6136.

It is an arithmetic number, because the mean of its divisors is an integer number (1617408).

Almost surely, 2^12543031 is an apocalyptic number.

12543031 is a deficient number, since it is larger than the sum of its proper divisors (396233).

12543031 is a wasteful number, since it uses less digits than its factorization.

12543031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 12543031 is about 3541.6141800032. The cubic root of 12543031 is about 232.3454462874.

Adding to 12543031 its reverse (13034521), we get a palindrome (25577552).

The spelling of 12543031 in words is "twelve million, five hundred forty-three thousand, thirty-one".