1131513530520 has 64 divisors (see below), whose sum is σ = 3399210097920. Its totient is φ = 301321874304.

The previous prime is 1131513530491. The next prime is 1131513530533. The reversal of 1131513530520 is 250353151311.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 6397822 + ... + 6572301.

It is an arithmetic number, because the mean of its divisors is an integer number (53112657780).

Almost surely, 2^{1131513530520} is an apocalyptic number.

1131513530520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131513530520 is an abundant number, since it is smaller than the sum of its proper divisors (2267696567400).

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

1131513530520 is a wasteful number, since it uses less digits than its factorization.

1131513530520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12970864 (or 12970860 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 30.

Adding to 1131513530520 its reverse (250353151311), we get a palindrome (1381866681831).

The spelling of 1131513530520 in words is "one trillion, one hundred thirty-one billion, five hundred thirteen million, five hundred thirty thousand, five hundred twenty".