1131111030 has 64 divisors (see below), whose sum is σ = 3108238848. Its totient is φ = 258059520.

The previous prime is 1131111013. The next prime is 1131111049. The reversal of 1131111030 is 301111311.

It is a junction number, because it is equal to n+sod(n) for n = 1131110997 and 1131111015.

It is a congruent number.

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, 115194 + ... + 124626.

It is an arithmetic number, because the mean of its divisors is an integer number (48566232).

Almost surely, 2^1131111030 is an apocalyptic number.

1131111030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131111030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1554119424).

1131111030 is an abundant number, since it is smaller than the sum of its proper divisors (1977127818).

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

1131111030 is a wasteful number, since it uses less digits than its factorization.

1131111030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10021.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 1131111030 is about 33631.9941424828. The cubic root of 1131111030 is about 1041.9216904197.

Adding to 1131111030 its reverse (301111311), we get a palindrome (1432222341).

The spelling of 1131111030 in words is "one billion, one hundred thirty-one million, one hundred eleven thousand, thirty".