1131231052 has 18 divisors (see below), whose sum is σ = 2302863612. Its totient is φ = 484813224.

The previous prime is 1131230999. The next prime is 1131231053. The reversal of 1131231052 is 2501321311.

It is not an unprimeable number, because it can be changed into a prime (1131231053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2885598 + ... + 2885989.

Almost surely, 2^1131231052 is an apocalyptic number.

It is an amenable number.

1131231052 is an abundant number, since it is smaller than the sum of its proper divisors (1171632560).

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

1131231052 is a wasteful number, since it uses less digits than its factorization.

1131231052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771605 (or 5771596 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1131231052 is about 33633.7784377551. The cubic root of 1131231052 is about 1041.9585418277.

Adding to 1131231052 its reverse (2501321311), we get a palindrome (3632552363).

The spelling of 1131231052 in words is "one billion, one hundred thirty-one million, two hundred thirty-one thousand, fifty-two".