2150071281 has 12 divisors (see below), whose sum is σ = 3212750580. Its totient is φ = 1383953760.

The previous prime is 2150071279. The next prime is 2150071289. The reversal of 2150071281 is 1821700512.

2150071281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1506992400 + 643078881 = 38820^2 + 25359^2 .

It is not a de Polignac number, because 2150071281 - 2¹ = 2150071279 is a prime.

It is a super-2 number, since 2×2150071281² = 9245613026761961922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2150071289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4118650 + ... + 4119171.

It is an arithmetic number, because the mean of its divisors is an integer number (267729215).

Almost surely, 2^2150071281 is an apocalyptic number.

It is an amenable number.

2150071281 is a deficient number, since it is larger than the sum of its proper divisors (1062679299).

2150071281 is a wasteful number, since it uses less digits than its factorization.

2150071281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8237856 (or 8237853 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 2150071281 is about 46368.8611138984. The cubic root of 2150071281 is about 1290.6771440421.

Adding to 2150071281 its reverse (1821700512), we get a palindrome (3971771793).

The spelling of 2150071281 in words is "two billion, one hundred fifty million, seventy-one thousand, two hundred eighty-one".