1145313132 has 12 divisors (see below), whose sum is σ = 2672397336. Its totient is φ = 381771040.

The previous prime is 1145313119. The next prime is 1145313149. The reversal of 1145313132 is 2313135411.

It is a tau number, because it is divible by the number of its divisors (12).

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, 47721369 + ... + 47721392.

It is an arithmetic number, because the mean of its divisors is an integer number (222699778).

Almost surely, 2^1145313132 is an apocalyptic number.

1145313132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1145313132 is an abundant number, since it is smaller than the sum of its proper divisors (1527084204).

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

1145313132 is a wasteful number, since it uses less digits than its factorization.

1145313132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95442768 (or 95442766 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 1145313132 is about 33842.4752640820. The cubic root of 1145313132 is about 1046.2643158957.

Adding to 1145313132 its reverse (2313135411), we get a palindrome (3458448543).

The spelling of 1145313132 in words is "one billion, one hundred forty-five million, three hundred thirteen thousand, one hundred thirty-two".