31133220300103 has 4 divisors (see below), whose sum is σ = 31207170942568. Its totient is φ = 31059269657640.

The previous prime is 31133220300047. The next prime is 31133220300107. The reversal of 31133220300103 is 30100302233113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31133220300103 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 (31133220300107) 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 3 ways as a sum of consecutive naturals, for example, 36975320601 + ... + 36975321442.

It is an arithmetic number, because the mean of its divisors is an integer number (7801792735642).

Almost surely, 2^{31133220300103} is an apocalyptic number.

31133220300103 is a deficient number, since it is larger than the sum of its proper divisors (73950642465).

31133220300103 is an equidigital number, since it uses as much as digits as its factorization.

31133220300103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73950642464.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31133220300103 its reverse (30100302233113), we get a palindrome (61233522533216).

The spelling of 31133220300103 in words is "thirty-one trillion, one hundred thirty-three billion, two hundred twenty million, three hundred thousand, one hundred three".