2623531 has 2 divisors, whose sum is σ = 2623532. Its totient is φ = 2623530.

The previous prime is 2623529. The next prime is 2623567. The reversal of 2623531 is 1353262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2623531 - 2¹ = 2623529 is a prime.

It is a super-2 number, since 2×2623531² = 13765829815922, which contains 22 as substring.

Together with 2623529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2623571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1311765 + 1311766.

It is an arithmetic number, because the mean of its divisors is an integer number (1311766).

2^2623531 is an apocalyptic number.

2623531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2623531 is an equidigital number, since it uses as much as digits as its factorization.

2623531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 22.

The square root of 2623531 is about 1619.7317679171. The cubic root of 2623531 is about 137.9204715754.

Adding to 2623531 its reverse (1353262), we get a palindrome (3976793).

The spelling of 2623531 in words is "two million, six hundred twenty-three thousand, five hundred thirty-one".