1131323120500 has 48 divisors (see below), whose sum is σ = 2471118655824. Its totient is φ = 452472662400.

The previous prime is 1131323120453. The next prime is 1131323120537. The reversal of 1131323120500 is 50213231311.

It can be written as a sum of positive squares in 8 ways, for example, as 61426648336 + 1069896472164 = 247844^2 + 1034358^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3981154 + ... + 4255846.

It is an arithmetic number, because the mean of its divisors is an integer number (51481638663).

Almost surely, 2^{1131323120500} is an apocalyptic number.

1131323120500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131323120500 is an abundant number, since it is smaller than the sum of its proper divisors (1339795535324).

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

1131323120500 is a wasteful number, since it uses less digits than its factorization.

1131323120500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282949 (or 282937 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 1131323120500 its reverse (50213231311), we get a palindrome (1181536351811).

The spelling of 1131323120500 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-three million, one hundred twenty thousand, five hundred".