2143511132 has 24 divisors (see below), whose sum is σ = 4312702464. Its totient is φ = 913144752.

The previous prime is 2143511129. The next prime is 2143511137. The reversal of 2143511132 is 2311153412.

It is a junction number, because it is equal to n+sod(n) for n = 2143511098 and 2143511107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143511137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224528 + ... + 233879.

It is an arithmetic number, because the mean of its divisors is an integer number (179695936).

Almost surely, 2^2143511132 is an apocalyptic number.

It is an amenable number.

2143511132 is an abundant number, since it is smaller than the sum of its proper divisors (2169191332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2143511132 is a wasteful number, since it uses less digits than its factorization.

2143511132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458585 (or 458583 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 2143511132 is about 46298.0683398347. The cubic root of 2143511132 is about 1289.3631317392.

Adding to 2143511132 its reverse (2311153412), we get a palindrome (4454664544).

The spelling of 2143511132 in words is "two billion, one hundred forty-three million, five hundred eleven thousand, one hundred thirty-two".