2143012340 has 24 divisors (see below), whose sum is σ = 5143229952. Its totient is φ = 734747040.

The previous prime is 2143012331. The next prime is 2143012429. The reversal of 2143012340 is 432103412.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7653476 + ... + 7653755.

It is an arithmetic number, because the mean of its divisors is an integer number (214301248).

Almost surely, 2^2143012340 is an apocalyptic number.

2143012340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143012340 is an abundant number, since it is smaller than the sum of its proper divisors (3000217612).

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

2143012340 is a wasteful number, since it uses less digits than its factorization.

2143012340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15307247 (or 15307245 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2143012340 is about 46292.6812790100. The cubic root of 2143012340 is about 1289.2631129901.

Adding to 2143012340 its reverse (432103412), we get a palindrome (2575115752).

The spelling of 2143012340 in words is "two billion, one hundred forty-three million, twelve thousand, three hundred forty".