1131110020 has 24 divisors (see below), whose sum is σ = 2451955968. Its totient is φ = 437848800.

The previous prime is 1131110003. The next prime is 1131110039. The reversal of 1131110020 is 200111311.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1131109979 and 1131110006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911566 + ... + 912805.

It is an arithmetic number, because the mean of its divisors is an integer number (102164832).

Almost surely, 2^1131110020 is an apocalyptic number.

1131110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131110020 is an abundant number, since it is smaller than the sum of its proper divisors (1320845948).

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

1131110020 is a wasteful number, since it uses less digits than its factorization.

1131110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824411 (or 1824409 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1131110020 is about 33631.9791270154. The cubic root of 1131110020 is about 1041.9213802995.

Adding to 1131110020 its reverse (200111311), we get a palindrome (1331221331).

The spelling of 1131110020 in words is "one billion, one hundred thirty-one million, one hundred ten thousand, twenty".