2143915123 has 8 divisors (see below), whose sum is σ = 2556718848. Its totient is φ = 1757743944.

The previous prime is 2143915121. The next prime is 2143915139. The reversal of 2143915123 is 3215193412.

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

It is a cyclic number.

It is not a de Polignac number, because 2143915123 - 2¹ = 2143915121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143915121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6657961 + ... + 6658282.

It is an arithmetic number, because the mean of its divisors is an integer number (319589856).

Almost surely, 2^2143915123 is an apocalyptic number.

2143915123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2143915123 is a deficient number, since it is larger than the sum of its proper divisors (412803725).

2143915123 is a wasteful number, since it uses less digits than its factorization.

2143915123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13316273.

The product of its digits is 6480, while the sum is 31.

The square root of 2143915123 is about 46302.4310700853. The cubic root of 2143915123 is about 1289.4441294338. Note that the first 3 decimals are identical.

The spelling of 2143915123 in words is "two billion, one hundred forty-three million, nine hundred fifteen thousand, one hundred twenty-three".