31103302103 has 4 divisors (see below), whose sum is σ = 31423954800. Its totient is φ = 30782649408.

The previous prime is 31103302039. The next prime is 31103302123. The reversal of 31103302103 is 30120330113.

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 31103302103 - 2⁶ = 31103302039 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 (31103302123) 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, 160326203 + ... + 160326396.

It is an arithmetic number, because the mean of its divisors is an integer number (7855988700).

Almost surely, 2^31103302103 is an apocalyptic number.

31103302103 is a deficient number, since it is larger than the sum of its proper divisors (320652697).

31103302103 is an equidigital number, since it uses as much as digits as its factorization.

31103302103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320652696.

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

Adding to 31103302103 its reverse (30120330113), we get a palindrome (61223632216).

The spelling of 31103302103 in words is "thirty-one billion, one hundred three million, three hundred two thousand, one hundred three".