2144155131 has 20 divisors (see below), whose sum is σ = 3232944792. Its totient is φ = 1416071808.

The previous prime is 2144155127. The next prime is 2144155177. The reversal of 2144155131 is 1315514412.

2144155131 is a `hidden beast` number, since 2 + 144 + 1 + 5 + 513 + 1 = 666.

It is not a de Polignac number, because 2144155131 - 2² = 2144155127 is a prime.

It is a super-2 number, since 2×2144155131² = 9194802451587254322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2144155095 and 2144155104.

It is not an unprimeable number, because it can be changed into a prime (2144155031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 115030 + ... + 132363.

Almost surely, 2^2144155131 is an apocalyptic number.

2144155131 is a deficient number, since it is larger than the sum of its proper divisors (1088789661).

2144155131 is a wasteful number, since it uses less digits than its factorization.

2144155131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247512 (or 247503 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 2144155131 is about 46305.0227405192. The cubic root of 2144155131 is about 1289.4922447339.

Adding to 2144155131 its reverse (1315514412), we get a palindrome (3459669543).

The spelling of 2144155131 in words is "two billion, one hundred forty-four million, one hundred fifty-five thousand, one hundred thirty-one".