13031331330133 has 4 divisors (see below), whose sum is σ = 13066267875628. Its totient is φ = 12996394784640.

The previous prime is 13031331330103. The next prime is 13031331330137. The reversal of 13031331330133 is 33103313313031.

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 6129897594769 + 6901433735364 = 2475863^2 + 2627058^2 .

It is a cyclic number.

It is not a de Polignac number, because 13031331330133 - 2¹³ = 13031331321941 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 (13031331330137) 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, 17468272188 + ... + 17468272933.

It is an arithmetic number, because the mean of its divisors is an integer number (3266566968907).

Almost surely, 2^{13031331330133} is an apocalyptic number.

It is an amenable number.

13031331330133 is a deficient number, since it is larger than the sum of its proper divisors (34936545495).

13031331330133 is an equidigital number, since it uses as much as digits as its factorization.

13031331330133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34936545494.

The product of its (nonzero) digits is 6561, while the sum is 28.

Adding to 13031331330133 its reverse (33103313313031), we get a palindrome (46134644643164).

The spelling of 13031331330133 in words is "thirteen trillion, thirty-one billion, three hundred thirty-one million, three hundred thirty thousand, one hundred thirty-three".