1331031113213 has 16 divisors (see below), whose sum is σ = 1408806991872. Its totient is φ = 1255491984000.

The previous prime is 1331031113171. The next prime is 1331031113249. The reversal of 1331031113213 is 3123111301331.

It is a cyclic number.

It is not a de Polignac number, because 1331031113213 - 2²² = 1331026918909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331031113513) 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, 855020 + ... + 1842042.

It is an arithmetic number, because the mean of its divisors is an integer number (88050436992).

Almost surely, 2^{1331031113213} is an apocalyptic number.

It is an amenable number.

1331031113213 is a deficient number, since it is larger than the sum of its proper divisors (77775878659).

1331031113213 is a wasteful number, since it uses less digits than its factorization.

1331031113213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988156.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 1331031113213 its reverse (3123111301331), we get a palindrome (4454142414544).

The spelling of 1331031113213 in words is "one trillion, three hundred thirty-one billion, thirty-one million, one hundred thirteen thousand, two hundred thirteen".