2143201399 has 16 divisors (see below), whose sum is σ = 2267398144. Its totient is φ = 2022602400.

The previous prime is 2143201393. The next prime is 2143201421. The reversal of 2143201399 is 9931023412.

It is a cyclic number.

It is not a de Polignac number, because 2143201399 - 2⁹ = 2143200887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143201393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1456234 + ... + 1457704.

It is an arithmetic number, because the mean of its divisors is an integer number (141712384).

Almost surely, 2^2143201399 is an apocalyptic number.

2143201399 is a deficient number, since it is larger than the sum of its proper divisors (124196745).

2143201399 is a wasteful number, since it uses less digits than its factorization.

2143201399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 2143201399 is about 46294.7232306232. The cubic root of 2143201399 is about 1289.3010252975.

The spelling of 2143201399 in words is "two billion, one hundred forty-three million, two hundred one thousand, three hundred ninety-nine".