1331212033231 has 2 divisors, whose sum is σ = 1331212033232. Its totient is φ = 1331212033230.

The previous prime is 1331212033189. The next prime is 1331212033241. The reversal of 1331212033231 is 1323302121331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331212033231 is a prime.

It is a super-2 number, since 2×1331212033231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331212033196 and 1331212033205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331212033241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665606016615 + 665606016616.

It is an arithmetic number, because the mean of its divisors is an integer number (665606016616).

Almost surely, 2^{1331212033231} is an apocalyptic number.

1331212033231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331212033231 is an equidigital number, since it uses as much as digits as its factorization.

1331212033231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1331212033231 its reverse (1323302121331), we get a palindrome (2654514154562).

The spelling of 1331212033231 in words is "one trillion, three hundred thirty-one billion, two hundred twelve million, thirty-three thousand, two hundred thirty-one".