1011311232 has 256 divisors, whose sum is σ = 3013977600. Its totient is φ = 299040768.

The previous prime is 1011311221. The next prime is 1011311237. The reversal of 1011311232 is 2321131101.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1011311237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12801369 + ... + 12801447.

It is an arithmetic number, because the mean of its divisors is an integer number (11773350).

Almost surely, 2^1011311232 is an apocalyptic number.

1011311232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011311232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1506988800).

1011311232 is an abundant number, since it is smaller than the sum of its proper divisors (2002666368).

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

1011311232 is a wasteful number, since it uses less digits than its factorization.

1011311232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 191 counting only the distinct ones).

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

The square root of 1011311232 is about 31801.1199802774. The cubic root of 1011311232 is about 1003.7562833355.

Adding to 1011311232 its reverse (2321131101), we get a palindrome (3332442333).

The spelling of 1011311232 in words is "one billion, eleven million, three hundred eleven thousand, two hundred thirty-two".