11623217331 has 16 divisors (see below), whose sum is σ = 16995022848. Its totient is φ = 7007488800.

The previous prime is 11623217323. The next prime is 11623217341. The reversal of 11623217331 is 13371232611.

11623217331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11623217331 - 2³ = 11623217323 is a prime.

It is a super-2 number, since 2×11623217331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11623217321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 915736 + ... + 928341.

It is an arithmetic number, because the mean of its divisors is an integer number (1062188928).

Almost surely, 2^11623217331 is an apocalyptic number.

11623217331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11623217331 is a deficient number, since it is larger than the sum of its proper divisors (5371805517).

11623217331 is a wasteful number, since it uses less digits than its factorization.

11623217331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844282.

The product of its digits is 4536, while the sum is 30.

Adding to 11623217331 its reverse (13371232611), we get a palindrome (24994449942).

The spelling of 11623217331 in words is "eleven billion, six hundred twenty-three million, two hundred seventeen thousand, three hundred thirty-one".