1311223131310 has 32 divisors (see below), whose sum is σ = 2512998185760. Its totient is φ = 490879183872.

The previous prime is 1311223131301. The next prime is 1311223131331. The reversal of 1311223131310 is 131313221131.

It is a super-2 number, since 2×1311223131310² (a number of 25 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 in 15 ways as a sum of consecutive naturals, for example, 21514479 + ... + 21575338.

It is an arithmetic number, because the mean of its divisors is an integer number (78531193305).

Almost surely, 2^{1311223131310} is an apocalyptic number.

1311223131310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311223131310 is a deficient number, since it is larger than the sum of its proper divisors (1201775054450).

1311223131310 is a wasteful number, since it uses less digits than its factorization.

1311223131310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43090020.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1311223131310 its reverse (131313221131), we get a palindrome (1442536352441).

The spelling of 1311223131310 in words is "one trillion, three hundred eleven billion, two hundred twenty-three million, one hundred thirty-one thousand, three hundred ten".