1011132231 has 4 divisors (see below), whose sum is σ = 1348176312. Its totient is φ = 674088152.

The previous prime is 1011132191. The next prime is 1011132257. The reversal of 1011132231 is 1322311101.

It is a happy number.

1011132231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011132231 - 2¹⁰ = 1011131207 is a prime.

It is a super-2 number, since 2×1011132231² = 2044776777134074722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1011132231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011132931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168522036 + ... + 168522041.

It is an arithmetic number, because the mean of its divisors is an integer number (337044078).

Almost surely, 2^1011132231 is an apocalyptic number.

1011132231 is a deficient number, since it is larger than the sum of its proper divisors (337044081).

1011132231 is an equidigital number, since it uses as much as digits as its factorization.

1011132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337044080.

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

The square root of 1011132231 is about 31798.3054737198. The cubic root of 1011132231 is about 1003.6970585804.

Adding to 1011132231 its reverse (1322311101), we get a palindrome (2333443332).

The spelling of 1011132231 in words is "one billion, eleven million, one hundred thirty-two thousand, two hundred thirty-one".