2143259997 has 8 divisors (see below), whose sum is σ = 2889789120. Its totient is φ = 1412785440.

The previous prime is 2143259977. The next prime is 2143259999. The reversal of 2143259997 is 7999523412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2143259997 - 2⁶ = 2143259933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143259999) 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 7 ways as a sum of consecutive naturals, for example, 4013329 + ... + 4013862.

It is an arithmetic number, because the mean of its divisors is an integer number (361223640).

Almost surely, 2^2143259997 is an apocalyptic number.

It is an amenable number.

2143259997 is a deficient number, since it is larger than the sum of its proper divisors (746529123).

2143259997 is an equidigital number, since it uses as much as digits as its factorization.

2143259997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8027283.

The product of its digits is 1224720, while the sum is 51.

The square root of 2143259997 is about 46295.3561062014. The cubic root of 2143259997 is about 1289.3127755966.

The spelling of 2143259997 in words is "two billion, one hundred forty-three million, two hundred fifty-nine thousand, nine hundred ninety-seven".