1145323133 has 16 divisors (see below), whose sum is σ = 1230266880. Its totient is φ = 1062432000.

The previous prime is 1145323093. The next prime is 1145323147. The reversal of 1145323133 is 3313235411.

It is not a de Polignac number, because 1145323133 - 2²⁰ = 1144274557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145323033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408968 + ... + 411758.

It is an arithmetic number, because the mean of its divisors is an integer number (76891680).

Almost surely, 2^1145323133 is an apocalyptic number.

It is an amenable number.

1145323133 is a deficient number, since it is larger than the sum of its proper divisors (84943747).

1145323133 is a wasteful number, since it uses less digits than its factorization.

1145323133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148.

The product of its digits is 3240, while the sum is 26.

The square root of 1145323133 is about 33842.6230218640. The cubic root of 1145323133 is about 1046.2673612518.

Adding to 1145323133 its reverse (3313235411), we get a palindrome (4458558544).

The spelling of 1145323133 in words is "one billion, one hundred forty-five million, three hundred twenty-three thousand, one hundred thirty-three".