1131314431220 has 24 divisors (see below), whose sum is σ = 2376137615208. Its totient is φ = 452453904000.

The previous prime is 1131314431207. The next prime is 1131314431243. The reversal of 1131314431220 is 221344131311.

It can be written as a sum of positive squares in 4 ways, for example, as 508799743204 + 622514688016 = 713302^2 + 788996^2 .

It is a super-2 number, since 2×1131314431220² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1131314431220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4362611 + ... + 4614650.

It is an arithmetic number, because the mean of its divisors is an integer number (99005733967).

Almost surely, 2^{1131314431220} is an apocalyptic number.

1131314431220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131314431220 is an abundant number, since it is smaller than the sum of its proper divisors (1244823183988).

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

1131314431220 is a wasteful number, since it uses less digits than its factorization.

1131314431220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8983571 (or 8983569 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 1131314431220 its reverse (221344131311), we get a palindrome (1352658562531).

The spelling of 1131314431220 in words is "one trillion, one hundred thirty-one billion, three hundred fourteen million, four hundred thirty-one thousand, two hundred twenty".