3223540021531 has 2 divisors, whose sum is σ = 3223540021532. Its totient is φ = 3223540021530.

The previous prime is 3223540021529. The next prime is 3223540021553. The reversal of 3223540021531 is 1351200453223.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3223540021531 - 2¹ = 3223540021529 is a prime.

It is a super-2 number, since 2×3223540021531² (a number of 26 digits) contains 22 as substring.

Together with 3223540021529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3223540021493 and 3223540021502.

It is not a weakly prime, because it can be changed into another prime (3223540021231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611770010765 + 1611770010766.

It is an arithmetic number, because the mean of its divisors is an integer number (1611770010766).

Almost surely, 2^{3223540021531} is an apocalyptic number.

3223540021531 is a deficient number, since it is larger than the sum of its proper divisors (1).

3223540021531 is an equidigital number, since it uses as much as digits as its factorization.

3223540021531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 3223540021531 its reverse (1351200453223), we get a palindrome (4574740474754).

The spelling of 3223540021531 in words is "three trillion, two hundred twenty-three billion, five hundred forty million, twenty-one thousand, five hundred thirty-one".