2023531 has 2 divisors, whose sum is σ = 2023532. Its totient is φ = 2023530.

The previous prime is 2023529. The next prime is 2023543. The reversal of 2023531 is 1353202.

2023531 is nontrivially palindromic in base 6.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2023531 - 2¹ = 2023529 is a prime.

It is a super-2 number, since 2×2023531² = 8189355415922, which contains 22 as substring.

Together with 2023529, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2023501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011765 + 1011766.

It is an arithmetic number, because the mean of its divisors is an integer number (1011766).

2^2023531 is an apocalyptic number.

2023531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2023531 is an equidigital number, since it uses as much as digits as its factorization.

2023531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 2023531 is about 1422.5086994462. The cubic root of 2023531 is about 126.4842997382.

Adding to 2023531 its reverse (1353202), we get a palindrome (3376733).

The spelling of 2023531 in words is "two million, twenty-three thousand, five hundred thirty-one".