1012143281 has 12 divisors (see below), whose sum is σ = 1078242192. Its totient is φ = 949874904.

The previous prime is 1012143271. The next prime is 1012143323. The reversal of 1012143281 is 1823412101.

It is not a de Polignac number, because 1012143281 - 2⁶ = 1012143217 is a prime.

It is a super-2 number, since 2×1012143281² = 2048868042546889922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012143271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25526 + ... + 51728.

It is an arithmetic number, because the mean of its divisors is an integer number (89853516).

Almost surely, 2^1012143281 is an apocalyptic number.

It is an amenable number.

1012143281 is a deficient number, since it is larger than the sum of its proper divisors (66098911).

1012143281 is a wasteful number, since it uses less digits than its factorization.

1012143281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26348 (or 26329 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1012143281 is about 31814.1993612915. The cubic root of 1012143281 is about 1004.0314856160.

Adding to 1012143281 its reverse (1823412101), we get a palindrome (2835555382).

The spelling of 1012143281 in words is "one billion, twelve million, one hundred forty-three thousand, two hundred eighty-one".