1331203212031 has 16 divisors (see below), whose sum is σ = 1747033608960. Its totient is φ = 982706402880.

The previous prime is 1331203212011. The next prime is 1331203212037. The reversal of 1331203212031 is 1302123021331.

It is a cyclic number.

It is not a de Polignac number, because 1331203212031 - 2⁹ = 1331203211519 is a prime.

It is a super-2 number, since 2×1331203212031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331203211993 and 1331203212011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331203212037) 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, 454955206 + ... + 454958131.

It is an arithmetic number, because the mean of its divisors is an integer number (109189600560).

Almost surely, 2^{1331203212031} is an apocalyptic number.

1331203212031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1331203212031 is a deficient number, since it is larger than the sum of its proper divisors (415830396929).

1331203212031 is a wasteful number, since it uses less digits than its factorization.

1331203212031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909913374.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1331203212031 its reverse (1302123021331), we get a palindrome (2633326233362).

The spelling of 1331203212031 in words is "one trillion, three hundred thirty-one billion, two hundred three million, two hundred twelve thousand, thirty-one".