2143131145 has 16 divisors (see below), whose sum is σ = 2740677120. Its totient is φ = 1605064384.

The previous prime is 2143131119. The next prime is 2143131149. The reversal of 2143131145 is 5411313412.

It is not a de Polignac number, because 2143131145 - 2⁷ = 2143131017 is a prime.

It is a super-2 number, since 2×2143131145² = 9186022209338022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2143131149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192850 + ... + 203659.

It is an arithmetic number, because the mean of its divisors is an integer number (171292320).

Almost surely, 2^2143131145 is an apocalyptic number.

It is an amenable number.

2143131145 is a deficient number, since it is larger than the sum of its proper divisors (597545975).

2143131145 is a wasteful number, since it uses less digits than its factorization.

2143131145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396584.

The product of its digits is 1440, while the sum is 25.

The square root of 2143131145 is about 46293.9644554233. The cubic root of 2143131145 is about 1289.2869374094.

Adding to 2143131145 its reverse (5411313412), we get a palindrome (7554444557).

The spelling of 2143131145 in words is "two billion, one hundred forty-three million, one hundred thirty-one thousand, one hundred forty-five".