1143231545 has 8 divisors (see below), whose sum is σ = 1373012424. Its totient is φ = 913828864.

The previous prime is 1143231541. The next prime is 1143231553. The reversal of 1143231545 is 5451323411.

It can be written as a sum of positive squares in 4 ways, for example, as 286557184 + 856674361 = 16928^2 + 29269^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143231545 - 2² = 1143231541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143231541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87854 + ... + 100023.

It is an arithmetic number, because the mean of its divisors is an integer number (171626553).

Almost surely, 2^1143231545 is an apocalyptic number.

It is an amenable number.

1143231545 is a deficient number, since it is larger than the sum of its proper divisors (229780879).

1143231545 is a wasteful number, since it uses less digits than its factorization.

1143231545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189099.

The product of its digits is 7200, while the sum is 29.

The square root of 1143231545 is about 33811.7072180628. The cubic root of 1143231545 is about 1045.6300756757.

Adding to 1143231545 its reverse (5451323411), we get a palindrome (6594554956).

The spelling of 1143231545 in words is "one billion, one hundred forty-three million, two hundred thirty-one thousand, five hundred forty-five".