3281231547889 has 9 divisors (see below), whose sum is σ = 3318676618593. Its totient is φ = 3244204372992.

The previous prime is 3281231547877. The next prime is 3281231547911. The reversal of 3281231547889 is 9887451321823.

It is a happy number.

The square root of 3281231547889 is 1811417.

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

It can be written as a sum of positive squares in 4 ways, for example, as 649724663025 + 2631506884864 = 806055^2 + 1622192^2 .

It is not a de Polignac number, because 3281231547889 - 2¹⁷ = 3281231416817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3281231547289) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 161205937 + ... + 161226289.

Almost surely, 2^{3281231547889} is an apocalyptic number.

3281231547889 is the 1811417-th square number.

3281231547889 is the 905709-th centered octagonal number.

It is an amenable number.

3281231547889 is a deficient number, since it is larger than the sum of its proper divisors (37445070704).

3281231547889 is an frugal number, since it uses more digits than its factorization.

3281231547889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40884 (or 20442 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 61.

The spelling of 3281231547889 in words is "three trillion, two hundred eighty-one billion, two hundred thirty-one million, five hundred forty-seven thousand, eight hundred eighty-nine".