12031315043 has 4 divisors (see below), whose sum is σ = 13125070968. Its totient is φ = 10937559120.

The previous prime is 12031315039. The next prime is 12031315061. The reversal of 12031315043 is 34051313021.

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

It is a cyclic number.

It is not a de Polignac number, because 12031315043 - 2² = 12031315039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12031315063) 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, 546877946 + ... + 546877967.

It is an arithmetic number, because the mean of its divisors is an integer number (3281267742).

Almost surely, 2^12031315043 is an apocalyptic number.

12031315043 is a deficient number, since it is larger than the sum of its proper divisors (1093755925).

12031315043 is a wasteful number, since it uses less digits than its factorization.

12031315043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093755924.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 12031315043 its reverse (34051313021), we get a palindrome (46082628064).

The spelling of 12031315043 in words is "twelve billion, thirty-one million, three hundred fifteen thousand, forty-three".