1143505131 has 8 divisors (see below), whose sum is σ = 1529043600. Its totient is φ = 760151712.

The previous prime is 1143505087. The next prime is 1143505151. The reversal of 1143505131 is 1315053411.

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

It is not a de Polignac number, because 1143505131 - 2⁶ = 1143505067 is a prime.

It is a super-2 number, since 2×1143505131² = 2615207969246654322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1143505151) 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, 545040 + ... + 547133.

It is an arithmetic number, because the mean of its divisors is an integer number (191130450).

Almost surely, 2^1143505131 is an apocalyptic number.

1143505131 is a deficient number, since it is larger than the sum of its proper divisors (385538469).

1143505131 is a wasteful number, since it uses less digits than its factorization.

1143505131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092525.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1143505131 is about 33815.7527049155. The cubic root of 1143505131 is about 1045.7134787083.

Adding to 1143505131 its reverse (1315053411), we get a palindrome (2458558542).

The spelling of 1143505131 in words is "one billion, one hundred forty-three million, five hundred five thousand, one hundred thirty-one".