31043042003 has 4 divisors (see below), whose sum is σ = 31179795720. Its totient is φ = 30906288288.

The previous prime is 31043041973. The next prime is 31043042011. The reversal of 31043042003 is 30024034013.

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 31043042003 - 2¹⁴ = 31043025619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31043042033) 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, 68376518 + ... + 68376971.

It is an arithmetic number, because the mean of its divisors is an integer number (7794948930).

Almost surely, 2^31043042003 is an apocalyptic number.

31043042003 is a deficient number, since it is larger than the sum of its proper divisors (136753717).

31043042003 is a wasteful number, since it uses less digits than its factorization.

31043042003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136753716.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 31043042003 its reverse (30024034013), we get a palindrome (61067076016).

The spelling of 31043042003 in words is "thirty-one billion, forty-three million, forty-two thousand, three".