1331123202031 has 8 divisors (see below), whose sum is σ = 1521593974784. Its totient is φ = 1140730008120.

The previous prime is 1331123202007. The next prime is 1331123202049. The reversal of 1331123202031 is 1302023211331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331123202031 - 2⁹ = 1331123201519 is a prime.

It is a super-2 number, since 2×1331123202031² (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 = 1331123201993 and 1331123202011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331123212031) 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 7 ways as a sum of consecutive naturals, for example, 19357935 + ... + 19426576.

It is an arithmetic number, because the mean of its divisors is an integer number (190199246848).

Almost surely, 2^{1331123202031} is an apocalyptic number.

1331123202031 is a deficient number, since it is larger than the sum of its proper divisors (190470772753).

1331123202031 is an equidigital number, since it uses as much as digits as its factorization.

1331123202031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38789421.

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

Adding to 1331123202031 its reverse (1302023211331), we get a palindrome (2633146413362).

The spelling of 1331123202031 in words is "one trillion, three hundred thirty-one billion, one hundred twenty-three million, two hundred two thousand, thirty-one".