2143513240 has 64 divisors (see below), whose sum is σ = 5266127520. Its totient is φ = 778752000.

The previous prime is 2143513223. The next prime is 2143513261. The reversal of 2143513240 is 423153412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 914470 + ... + 916810.

Almost surely, 2^2143513240 is an apocalyptic number.

2143513240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143513240 is an abundant number, since it is smaller than the sum of its proper divisors (3122614280).

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

2143513240 is a wasteful number, since it uses less digits than its factorization.

2143513240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4444 (or 4440 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2143513240 is about 46298.0911053577. The cubic root of 2143513240 is about 1289.3635544066.

Adding to 2143513240 its reverse (423153412), we get a palindrome (2566666652).

The spelling of 2143513240 in words is "two billion, one hundred forty-three million, five hundred thirteen thousand, two hundred forty".