33131012113 has 4 divisors (see below), whose sum is σ = 33584861668. Its totient is φ = 32677162560.

The previous prime is 33131012111. The next prime is 33131012149. The reversal of 33131012113 is 31121013133.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27533428624 + 5597583489 = 165932^2 + 74817^2 .

It is a cyclic number.

It is not a de Polignac number, because 33131012113 - 2¹ = 33131012111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33131012111) 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, 226924668 + ... + 226924813.

It is an arithmetic number, because the mean of its divisors is an integer number (8396215417).

Almost surely, 2^33131012113 is an apocalyptic number.

It is an amenable number.

33131012113 is a deficient number, since it is larger than the sum of its proper divisors (453849555).

33131012113 is an equidigital number, since it uses as much as digits as its factorization.

33131012113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453849554.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 33131012113 its reverse (31121013133), we get a palindrome (64252025246).

The spelling of 33131012113 in words is "thirty-three billion, one hundred thirty-one million, twelve thousand, one hundred thirteen".