1311400220 has 24 divisors (see below), whose sum is σ = 2965782624. Its totient is φ = 484209216.

The previous prime is 1311400219. The next prime is 1311400267. The reversal of 1311400220 is 220041131.

It is a junction number, because it is equal to n+sod(n) for n = 1311400195 and 1311400204.

It is a congruent number.

It is an unprimeable number.

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, 2521664 + ... + 2522183.

It is an arithmetic number, because the mean of its divisors is an integer number (123574276).

Almost surely, 2^1311400220 is an apocalyptic number.

1311400220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311400220 is an abundant number, since it is smaller than the sum of its proper divisors (1654382404).

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

1311400220 is a wasteful number, since it uses less digits than its factorization.

1311400220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5043869 (or 5043867 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1311400220 is about 36213.2602785223. The cubic root of 1311400220 is about 1094.5738895129.

Adding to 1311400220 its reverse (220041131), we get a palindrome (1531441351).

The spelling of 1311400220 in words is "one billion, three hundred eleven million, four hundred thousand, two hundred twenty".