1145531343 has 16 divisors (see below), whose sum is σ = 1667126016. Its totient is φ = 693887040.

The previous prime is 1145531279. The next prime is 1145531393. The reversal of 1145531343 is 3431355411.

It is not a de Polignac number, because 1145531343 - 2⁶ = 1145531279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1145531343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145531393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60555 + ... + 77187.

It is an arithmetic number, because the mean of its divisors is an integer number (104195376).

Almost surely, 2^1145531343 is an apocalyptic number.

1145531343 is a deficient number, since it is larger than the sum of its proper divisors (521594673).

1145531343 is a wasteful number, since it uses less digits than its factorization.

1145531343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18734.

The product of its digits is 10800, while the sum is 30.

The square root of 1145531343 is about 33845.6990325211. The cubic root of 1145531343 is about 1046.3307582448.

Adding to 1145531343 its reverse (3431355411), we get a palindrome (4576886754).

The spelling of 1145531343 in words is "one billion, one hundred forty-five million, five hundred thirty-one thousand, three hundred forty-three".