1143105061 has 4 divisors (see below), whose sum is σ = 1306405792. Its totient is φ = 979804332.

The previous prime is 1143105049. The next prime is 1143105091. The reversal of 1143105061 is 1605013411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1143105061 - 2⁷ = 1143104933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143105031) 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 3 ways as a sum of consecutive naturals, for example, 81650355 + ... + 81650368.

It is an arithmetic number, because the mean of its divisors is an integer number (326601448).

Almost surely, 2^1143105061 is an apocalyptic number.

It is an amenable number.

1143105061 is a deficient number, since it is larger than the sum of its proper divisors (163300731).

1143105061 is an equidigital number, since it uses as much as digits as its factorization.

1143105061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163300730.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1143105061 is about 33809.8367490883. The cubic root of 1143105061 is about 1045.5915123731.

Adding to 1143105061 its reverse (1605013411), we get a palindrome (2748118472).

The spelling of 1143105061 in words is "one billion, one hundred forty-three million, one hundred five thousand, sixty-one".