2731003081 has 3 divisors (see below), whose sum is σ = 2731055341. Its totient is φ = 2730950822.

The previous prime is 2731003069. The next prime is 2731003111. The reversal of 2731003081 is 1803001372.

The square root of 2731003081 is 52259.

It is a perfect power (a square), and thus also a powerful number.

2731003081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2731003081 - 2¹⁵ = 2730970313 is a prime.

It is a super-2 number, since 2×2731003081² = 14916755656862985122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2731003381) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 26130 + ... + 78388.

Almost surely, 2^2731003081 is an apocalyptic number.

2731003081 is the 52259-th square number.

2731003081 is the 26130-th centered octagonal number.

It is an amenable number.

2731003081 is a deficient number, since it is larger than the sum of its proper divisors (52260).

2731003081 is an frugal number, since it uses more digits than its factorization.

2731003081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104518 (or 52259 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The cubic root of 2731003081 is about 1397.7861406331.

Multiplying 2731003081 by its sum of digits (25), we get a square (68275077025 = 261295²).

The spelling of 2731003081 in words is "two billion, seven hundred thirty-one million, three thousand, eighty-one".