1331331302231 has 32 divisors (see below), whose sum is σ = 1579398912000. Its totient is φ = 1098009868032.

The previous prime is 1331331302207. The next prime is 1331331302237. The reversal of 1331331302231 is 1322031331331.

It is not a de Polignac number, because 1331331302231 - 2¹⁰ = 1331331301207 is a prime.

It is a super-2 number, since 2×1331331302231² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1331331302231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331331302237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76685330 + ... + 76702688.

It is an arithmetic number, because the mean of its divisors is an integer number (49356216000).

Almost surely, 2^{1331331302231} is an apocalyptic number.

1331331302231 is a deficient number, since it is larger than the sum of its proper divisors (248067609769).

1331331302231 is a wasteful number, since it uses less digits than its factorization.

1331331302231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18671.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1331331302231 its reverse (1322031331331), we get a palindrome (2653362633562).

The spelling of 1331331302231 in words is "one trillion, three hundred thirty-one billion, three hundred thirty-one million, three hundred two thousand, two hundred thirty-one".