2047331681 has 8 divisors (see below), whose sum is σ = 2155517280. Its totient is φ = 1939189248.

The previous prime is 2047331659. The next prime is 2047331717. The reversal of 2047331681 is 1861337402.

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

It is a de Polignac number, because none of the positive numbers 2^k-2047331681 is a prime.

It is a super-2 number, since 2×2047331681² = 8383134024052571522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2047331081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142625 + ... + 156321.

It is an arithmetic number, because the mean of its divisors is an integer number (269439660).

Almost surely, 2^2047331681 is an apocalyptic number.

It is an amenable number.

2047331681 is a deficient number, since it is larger than the sum of its proper divisors (108185599).

2047331681 is a wasteful number, since it uses less digits than its factorization.

2047331681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21583.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 2047331681 is about 45247.4494419299. The cubic root of 2047331681 is about 1269.7826897902.

The spelling of 2047331681 in words is "two billion, forty-seven million, three hundred thirty-one thousand, six hundred eighty-one".