1331331212031 has 16 divisors (see below), whose sum is σ = 1779003088128. Its totient is φ = 885608873600.

The previous prime is 1331331211993. The next prime is 1331331212129. The reversal of 1331331212031 is 1302121331331.

It is a cyclic number.

It is not a de Polignac number, because 1331331212031 - 2¹⁸ = 1331330949887 is a prime.

It is a super-2 number, since 2×1331331212031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331331211992 and 1331331212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331331212131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2236966 + ... + 2768876.

It is an arithmetic number, because the mean of its divisors is an integer number (111187693008).

Almost surely, 2^{1331331212031} is an apocalyptic number.

1331331212031 is a deficient number, since it is larger than the sum of its proper divisors (447671876097).

1331331212031 is an equidigital number, since it uses as much as digits as its factorization.

1331331212031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533742.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1331331212031 its reverse (1302121331331), we get a palindrome (2633452543362).

The spelling of 1331331212031 in words is "one trillion, three hundred thirty-one billion, three hundred thirty-one million, two hundred twelve thousand, thirty-one".