1311130220 has 24 divisors (see below), whose sum is σ = 2775058944. Its totient is φ = 520321536.

The previous prime is 1311130217. The next prime is 1311130229. The reversal of 1311130220 is 220311131.

It is a junction number, because it is equal to n+sod(n) for n = 1311130195 and 1311130204.

It is not an unprimeable number, because it can be changed into a prime (1311130229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255557 + ... + 260636.

It is an arithmetic number, because the mean of its divisors is an integer number (115627456).

Almost surely, 2^1311130220 is an apocalyptic number.

1311130220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311130220 is an abundant number, since it is smaller than the sum of its proper divisors (1463928724).

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

1311130220 is a wasteful number, since it uses less digits than its factorization.

1311130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516329 (or 516327 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1311130220 is about 36209.5321704106. The cubic root of 1311130220 is about 1094.4987649170.

Adding to 1311130220 its reverse (220311131), we get a palindrome (1531441351).

The spelling of 1311130220 in words is "one billion, three hundred eleven million, one hundred thirty thousand, two hundred twenty".