11031404511 has 16 divisors (see below), whose sum is σ = 15312664800. Its totient is φ = 7055438208.

The previous prime is 11031404507. The next prime is 11031404539. The reversal of 11031404511 is 11540413011.

It is not a de Polignac number, because 11031404511 - 2² = 11031404507 is a prime.

It is a super-2 number, since 2×11031404511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031404561) 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, 390156 + ... + 417473.

It is an arithmetic number, because the mean of its divisors is an integer number (957041550).

Almost surely, 2^11031404511 is an apocalyptic number.

11031404511 is a deficient number, since it is larger than the sum of its proper divisors (4281260289).

11031404511 is a wasteful number, since it uses less digits than its factorization.

11031404511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807818.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 11031404511 its reverse (11540413011), we get a palindrome (22571817522).

The spelling of 11031404511 in words is "eleven billion, thirty-one million, four hundred four thousand, five hundred eleven".