1131121230 has 32 divisors (see below), whose sum is σ = 2765915424. Its totient is φ = 295940736.

The previous prime is 1131121217. The next prime is 1131121241. The reversal of 1131121230 is 321211311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 354109 + ... + 357288.

It is an arithmetic number, because the mean of its divisors is an integer number (86434857).

Almost surely, 2^1131121230 is an apocalyptic number.

1131121230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131121230 is an abundant number, since it is smaller than the sum of its proper divisors (1634794194).

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

1131121230 is a wasteful number, since it uses less digits than its factorization.

1131121230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711460.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1131121230 is about 33632.1457834614. The cubic root of 1131121230 is about 1041.9248223166.

Adding to 1131121230 its reverse (321211311), we get a palindrome (1452332541).

The spelling of 1131121230 in words is "one billion, one hundred thirty-one million, one hundred twenty-one thousand, two hundred thirty".