1141831681 has 3 divisors (see below), whose sum is σ = 1141865473. Its totient is φ = 1141797890.

The previous prime is 1141831679. The next prime is 1141831687. The reversal of 1141831681 is 1861381411.

The square root of 1141831681 is 33791.

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

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 1141831681 - 2¹ = 1141831679 is a prime.

It is a super-2 number, since 2×1141831681² = 2607559175470571522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1141831687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 16896 + ... + 50686.

Almost surely, 2^1141831681 is an apocalyptic number.

1141831681 is the 33791-st square number.

1141831681 is the 16896-th centered octagonal number.

It is an amenable number.

1141831681 is a deficient number, since it is larger than the sum of its proper divisors (33792).

1141831681 is an frugal number, since it uses more digits than its factorization.

1141831681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67582 (or 33791 counting only the distinct ones).

The product of its digits is 4608, while the sum is 34.

The cubic root of 1141831681 is about 1045.2031170386.

The spelling of 1141831681 in words is "one billion, one hundred forty-one million, eight hundred thirty-one thousand, six hundred eighty-one".