3229387422581 has 4 divisors (see below), whose sum is σ = 3229391030892. Its totient is φ = 3229383814272.

The previous prime is 3229387422523. The next prime is 3229387422589. The reversal of 3229387422581 is 1852247839223.

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 can be written as a sum of positive squares in 2 ways, for example, as 1619638022500 + 1609749400081 = 1272650^2 + 1268759^2 .

It is a cyclic number.

It is not a de Polignac number, because 3229387422581 - 2²⁶ = 3229320313717 is a prime.

It is a super-2 number, since 2×3229387422581² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3229387422589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662135 + ... + 2626251.

It is an arithmetic number, because the mean of its divisors is an integer number (807347757723).

Almost surely, 2^{3229387422581} is an apocalyptic number.

It is an amenable number.

3229387422581 is a deficient number, since it is larger than the sum of its proper divisors (3608311).

3229387422581 is a wasteful number, since it uses less digits than its factorization.

3229387422581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608310.

The product of its digits is 11612160, while the sum is 56.

The spelling of 3229387422581 in words is "three trillion, two hundred twenty-nine billion, three hundred eighty-seven million, four hundred twenty-two thousand, five hundred eighty-one".