2143140081 has 16 divisors (see below), whose sum is σ = 3018301440. Its totient is φ = 1350513360.

The previous prime is 2143140061. The next prime is 2143140101. The reversal of 2143140081 is 1800413412.

It is an interprime number because it is at equal distance from previous prime (2143140061) and next prime (2143140101).

It is not a de Polignac number, because 2143140081 - 2⁷ = 2143139953 is a prime.

It is a super-2 number, since 2×2143140081² = 9186098813577373122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2143140031) 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, 263961 + ... + 271958.

It is an arithmetic number, because the mean of its divisors is an integer number (188643840).

Almost surely, 2^2143140081 is an apocalyptic number.

It is an amenable number.

2143140081 is a deficient number, since it is larger than the sum of its proper divisors (875161359).

2143140081 is a wasteful number, since it uses less digits than its factorization.

2143140081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535996.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 2143140081 is about 46294.0609689839. The cubic root of 2143140081 is about 1289.2887293440.

Adding to 2143140081 its reverse (1800413412), we get a palindrome (3943553493).

The spelling of 2143140081 in words is "two billion, one hundred forty-three million, one hundred forty thousand, eighty-one".