2011522623 has 16 divisors (see below), whose sum is σ = 2930518272. Its totient is φ = 1217160000.

The previous prime is 2011522613. The next prime is 2011522651. The reversal of 2011522623 is 3262251102.

It is not a de Polignac number, because 2011522623 - 2⁶ = 2011522559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011522593 and 2011522602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011522613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27478 + ... + 69123.

It is an arithmetic number, because the mean of its divisors is an integer number (183157392).

Almost surely, 2^2011522623 is an apocalyptic number.

2011522623 is a deficient number, since it is larger than the sum of its proper divisors (918995649).

2011522623 is a wasteful number, since it uses less digits than its factorization.

2011522623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97246.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2011522623 is about 44850.0013712374. The cubic root of 2011522623 is about 1262.3360172338.

Adding to 2011522623 its reverse (3262251102), we get a palindrome (5273773725).

The spelling of 2011522623 in words is "two billion, eleven million, five hundred twenty-two thousand, six hundred twenty-three".