11030020523 has 4 divisors (see below), whose sum is σ = 11030665488. Its totient is φ = 11029375560.

The previous prime is 11030020511. The next prime is 11030020537. The reversal of 11030020523 is 32502003011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32502003011 = 6737 ⋅4824403.

It is a cyclic number.

It is not a de Polignac number, because 11030020523 - 2¹⁶ = 11029954987 is a prime.

It is a super-2 number, since 2×11030020523² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11030020723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296111 + ... + 331272.

It is an arithmetic number, because the mean of its divisors is an integer number (2757666372).

Almost surely, 2^11030020523 is an apocalyptic number.

11030020523 is a deficient number, since it is larger than the sum of its proper divisors (644965).

11030020523 is an equidigital number, since it uses as much as digits as its factorization.

11030020523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644964.

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 11030020523 its reverse (32502003011), we get a palindrome (43532023534).

The spelling of 11030020523 in words is "eleven billion, thirty million, twenty thousand, five hundred twenty-three".