31231003103 has 8 divisors (see below), whose sum is σ = 33024759936. Its totient is φ = 29486390400.

The previous prime is 31231003099. The next prime is 31231003129. The reversal of 31231003103 is 30130013213.

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

It is a cyclic number.

It is not a de Polignac number, because 31231003103 - 2² = 31231003099 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 (31231603103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12284726 + ... + 12287267.

It is an arithmetic number, because the mean of its divisors is an integer number (4128094992).

Almost surely, 2^31231003103 is an apocalyptic number.

31231003103 is a deficient number, since it is larger than the sum of its proper divisors (1793756833).

31231003103 is a wasteful number, since it uses less digits than its factorization.

31231003103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24572065.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31231003103 its reverse (30130013213), we get a palindrome (61361016316).

The spelling of 31231003103 in words is "thirty-one billion, two hundred thirty-one million, three thousand, one hundred three".