1131320011020 has 96 divisors (see below), whose sum is σ = 3174421426176. Its totient is φ = 301045248000.

The previous prime is 1131320011007. The next prime is 1131320011039. The reversal of 1131320011020 is 201100231311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123623445 + ... + 123632595.

It is an arithmetic number, because the mean of its divisors is an integer number (33066889856).

Almost surely, 2^{1131320011020} is an apocalyptic number.

1131320011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131320011020 is an abundant number, since it is smaller than the sum of its proper divisors (2043101415156).

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

1131320011020 is a wasteful number, since it uses less digits than its factorization.

1131320011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13311 (or 13309 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1131320011020 its reverse (201100231311), we get a palindrome (1332420242331).

The spelling of 1131320011020 in words is "one trillion, one hundred thirty-one billion, three hundred twenty million, eleven thousand, twenty".