2233531 has 2 divisors, whose sum is σ = 2233532. Its totient is φ = 2233530.

The previous prime is 2233529. The next prime is 2233537. The reversal of 2233531 is 1353322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2233531 - 2¹ = 2233529 is a prime.

It is a super-2 number, since 2×2233531² = 9977321455922, which contains 22 as substring.

Together with 2233529, it forms a pair of twin primes.

It is a Chen prime.

It is the 1495-th Hogben number.

2233531 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2233499 and 2233508.

It is not a weakly prime, because it can be changed into another prime (2233537) by changing a digit.

It is a nontrivial repunit in base 1494.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1116765 + 1116766.

It is an arithmetic number, because the mean of its divisors is an integer number (1116766).

2^2233531 is an apocalyptic number.

2233531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2233531 is an equidigital number, since it uses as much as digits as its factorization.

2233531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 19.

The square root of 2233531 is about 1494.5002509200. The cubic root of 2233531 is about 130.7165754381.

Adding to 2233531 its reverse (1353322), we get a palindrome (3586853).

It can be divided in two parts, 22335 and 31, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 2233531 in words is "two million, two hundred thirty-three thousand, five hundred thirty-one".