1131223230 has 48 divisors (see below), whose sum is σ = 2970324864. Its totient is φ = 298670400.

The previous prime is 1131223217. The next prime is 1131223241. The reversal of 1131223230 is 323221311.

1131223230 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53134 + ... + 71313.

It is an arithmetic number, because the mean of its divisors is an integer number (61881768).

Almost surely, 2^1131223230 is an apocalyptic number.

1131223230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131223230 is an abundant number, since it is smaller than the sum of its proper divisors (1839101634).

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

1131223230 is a wasteful number, since it uses less digits than its factorization.

1131223230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124561 (or 124558 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1131223230 is about 33633.6621556440. The cubic root of 1131223230 is about 1041.9561402498.

Adding to 1131223230 its reverse (323221311), we get a palindrome (1454444541).

The spelling of 1131223230 in words is "one billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred thirty".