1311230220310 has 48 divisors (see below), whose sum is σ = 2538954740160. Its totient is φ = 487390924800.

The previous prime is 1311230220257. The next prime is 1311230220319. The reversal of 1311230220310 is 130220321131.

It is a super-2 number, since 2×1311230220310² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311230220319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2643291 + ... + 3099910.

It is an arithmetic number, because the mean of its divisors is an integer number (52894890420).

Almost surely, 2^{1311230220310} is an apocalyptic number.

1311230220310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311230220310 is a deficient number, since it is larger than the sum of its proper divisors (1227724519850).

1311230220310 is a wasteful number, since it uses less digits than its factorization.

1311230220310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743321 (or 5743304 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1311230220310 its reverse (130220321131), we get a palindrome (1441450541441).

The spelling of 1311230220310 in words is "one trillion, three hundred eleven billion, two hundred thirty million, two hundred twenty thousand, three hundred ten".