1145531132 has 12 divisors (see below), whose sum is σ = 2005447080. Its totient is φ = 572546256.

The previous prime is 1145531099. The next prime is 1145531143. The reversal of 1145531132 is 2311355411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42782 + ... + 64197.

It is an arithmetic number, because the mean of its divisors is an integer number (167120590).

Almost surely, 2^1145531132 is an apocalyptic number.

It is an amenable number.

1145531132 is a deficient number, since it is larger than the sum of its proper divisors (859915948).

1145531132 is a wasteful number, since it uses less digits than its factorization.

1145531132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109660 (or 109658 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 1145531132 is about 33845.6959154336. The cubic root of 1145531132 is about 1046.3306940022.

Adding to 1145531132 its reverse (2311355411), we get a palindrome (3456886543).

The spelling of 1145531132 in words is "one billion, one hundred forty-five million, five hundred thirty-one thousand, one hundred thirty-two".