1131331032 has 96 divisors (see below), whose sum is σ = 3376573200. Its totient is φ = 339994368.

The previous prime is 1131331021. The next prime is 1131331037. The reversal of 1131331032 is 2301331311.

It is a happy number.

1131331032 is a `hidden beast` number, since 11 + 313 + 310 + 32 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1131330996 and 1131331014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131331037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26194 + ... + 54302.

Almost surely, 2^1131331032 is an apocalyptic number.

1131331032 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 1131331032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1688286600).

1131331032 is an abundant number, since it is smaller than the sum of its proper divisors (2245242168).

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

1131331032 is a wasteful number, since it uses less digits than its factorization.

1131331032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28177 (or 28170 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1131331032 is about 33635.2647083385. The cubic root of 1131331032 is about 1041.9892375746.

Adding to 1131331032 its reverse (2301331311), we get a palindrome (3432662343).

The spelling of 1131331032 in words is "one billion, one hundred thirty-one million, three hundred thirty-one thousand, thirty-two".