13331311231312 has 10 divisors (see below), whose sum is σ = 25829415510698. Its totient is φ = 6665655615648.

The previous prime is 13331311231297. The next prime is 13331311231333. The reversal of 13331311231312 is 21313211313331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12889851979536 + 441459251776 = 3590244^2 + 664424^2 .

It is a super-2 number, since 2×13331311231312² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 416603475963 + ... + 416603475994.

Almost surely, 2^{13331311231312} is an apocalyptic number.

It is an amenable number.

13331311231312 is a deficient number, since it is larger than the sum of its proper divisors (12498104279386).

13331311231312 is an equidigital number, since it uses as much as digits as its factorization.

13331311231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833206951965 (or 833206951959 counting only the distinct ones).

The product of its digits is 2916, while the sum is 28.

Adding to 13331311231312 its reverse (21313211313331), we get a palindrome (34644522544643).

The spelling of 13331311231312 in words is "thirteen trillion, three hundred thirty-one billion, three hundred eleven million, two hundred thirty-one thousand, three hundred twelve".