11523455031 has 16 divisors (see below), whose sum is σ = 16763205888. Its totient is φ = 6983155200.

The previous prime is 11523454997. The next prime is 11523455059. The reversal of 11523455031 is 13055432511.

It is not a de Polignac number, because 11523455031 - 2¹⁸ = 11523192887 is a prime.

It is a super-2 number, since 2×11523455031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11523455031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11523450031) 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, 514966 + ... + 536876.

It is an arithmetic number, because the mean of its divisors is an integer number (1047700368).

Almost surely, 2^11523455031 is an apocalyptic number.

11523455031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11523455031 is a deficient number, since it is larger than the sum of its proper divisors (5239750857).

11523455031 is a wasteful number, since it uses less digits than its factorization.

11523455031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37862.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 11523455031 its reverse (13055432511), we get a palindrome (24578887542).

The spelling of 11523455031 in words is "eleven billion, five hundred twenty-three million, four hundred fifty-five thousand, thirty-one".