31133122103 has 4 divisors (see below), whose sum is σ = 31138885440. Its totient is φ = 31127358768.

The previous prime is 31133122061. The next prime is 31133122123. The reversal of 31133122103 is 30122133113.

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 31133122103 - 2¹⁰ = 31133121079 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 (31133122123) 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, 2873558 + ... + 2884371.

It is an arithmetic number, because the mean of its divisors is an integer number (7784721360).

Almost surely, 2^31133122103 is an apocalyptic number.

31133122103 is a deficient number, since it is larger than the sum of its proper divisors (5763337).

31133122103 is an equidigital number, since it uses as much as digits as its factorization.

31133122103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763336.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31133122103 its reverse (30122133113), we get a palindrome (61255255216).

The spelling of 31133122103 in words is "thirty-one billion, one hundred thirty-three million, one hundred twenty-two thousand, one hundred three".