1331220131203 has 4 divisors (see below), whose sum is σ = 1331285155840. Its totient is φ = 1331155106568.

The previous prime is 1331220131183. The next prime is 1331220131273. The reversal of 1331220131203 is 3021310221331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1331220131203 - 2²¹ = 1331218034051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331220131273) 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 3 ways as a sum of consecutive naturals, for example, 32481600 + ... + 32522557.

It is an arithmetic number, because the mean of its divisors is an integer number (332821288960).

Almost surely, 2^{1331220131203} is an apocalyptic number.

1331220131203 is a deficient number, since it is larger than the sum of its proper divisors (65024637).

1331220131203 is an equidigital number, since it uses as much as digits as its factorization.

1331220131203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65024636.

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

Adding to 1331220131203 its reverse (3021310221331), we get a palindrome (4352530352534).

The spelling of 1331220131203 in words is "one trillion, three hundred thirty-one billion, two hundred twenty million, one hundred thirty-one thousand, two hundred three".