1011231330 has 32 divisors (see below), whose sum is σ = 2456201664. Its totient is φ = 266412096.

The previous prime is 1011231329. The next prime is 1011231337. The reversal of 1011231330 is 331321101.

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

It is not an unprimeable number, because it can be changed into a prime (1011231337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200569 + ... + 205548.

It is an arithmetic number, because the mean of its divisors is an integer number (76756302).

Almost surely, 2^1011231330 is an apocalyptic number.

1011231330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011231330 is an abundant number, since it is smaller than the sum of its proper divisors (1444970334).

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

1011231330 is a wasteful number, since it uses less digits than its factorization.

1011231330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406210.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1011231330 is about 31799.8636789531. The cubic root of 1011231330 is about 1003.7298476072.

Adding to 1011231330 its reverse (331321101), we get a palindrome (1342552431).

The spelling of 1011231330 in words is "one billion, eleven million, two hundred thirty-one thousand, three hundred thirty".