2133023531 has 4 divisors (see below), whose sum is σ = 2173269312. Its totient is φ = 2092777752.

The previous prime is 2133023521. The next prime is 2133023533. The reversal of 2133023531 is 1353203312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2133023531 - 2¹⁴ = 2133007147 is a prime.

It is a super-2 number, since 2×2133023531² = 9099578767599415922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2133023497 and 2133023506.

It is not an unprimeable number, because it can be changed into a prime (2133023533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20122811 + ... + 20122916.

It is an arithmetic number, because the mean of its divisors is an integer number (543317328).

Almost surely, 2^2133023531 is an apocalyptic number.

2133023531 is a deficient number, since it is larger than the sum of its proper divisors (40245781).

2133023531 is an equidigital number, since it uses as much as digits as its factorization.

2133023531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40245780.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 2133023531 is about 46184.6677047697. The cubic root of 2133023531 is about 1287.2568616941.

Adding to 2133023531 its reverse (1353203312), we get a palindrome (3486226843).

The spelling of 2133023531 in words is "two billion, one hundred thirty-three million, twenty-three thousand, five hundred thirty-one".