31200031103 has 8 divisors (see below), whose sum is σ = 31944142272. Its totient is φ = 30459265056.

The previous prime is 31200031097. The next prime is 31200031237. The reversal of 31200031103 is 30113000213.

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 31200031103 - 2⁶ = 31200031039 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 (31200031903) 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, 817400 + ... + 854717.

It is an arithmetic number, because the mean of its divisors is an integer number (3993017784).

Almost surely, 2^31200031103 is an apocalyptic number.

31200031103 is a deficient number, since it is larger than the sum of its proper divisors (744111169).

31200031103 is a wasteful number, since it uses less digits than its factorization.

31200031103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672561.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31200031103 its reverse (30113000213), we get a palindrome (61313031316).

The spelling of 31200031103 in words is "thirty-one billion, two hundred million, thirty-one thousand, one hundred three".