1311230310220 has 24 divisors (see below), whose sum is σ = 2753708880384. Its totient is φ = 524468270976.

The previous prime is 1311230310209. The next prime is 1311230310227. The reversal of 1311230310220 is 220130321131.

It is not an unprimeable number, because it can be changed into a prime (1311230310227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036684 + ... + 1922803.

It is an arithmetic number, because the mean of its divisors is an integer number (114737870016).

Almost surely, 2^{1311230310220} is an apocalyptic number.

1311230310220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311230310220 is an abundant number, since it is smaller than the sum of its proper divisors (1442478570164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311230310220 is a wasteful number, since it uses less digits than its factorization.

1311230310220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981649 (or 2981647 counting only the distinct ones).

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

Adding to 1311230310220 its reverse (220130321131), we get a palindrome (1531360631351).

The spelling of 1311230310220 in words is "one trillion, three hundred eleven billion, two hundred thirty million, three hundred ten thousand, two hundred twenty".