12113431005 has 64 divisors (see below), whose sum is σ = 22233512448. Its totient is φ = 5578874880.

The previous prime is 12113430997. The next prime is 12113431013. The reversal of 12113431005 is 50013431121.

It is an interprime number because it is at equal distance from previous prime (12113430997) and next prime (12113431013).

It is not a de Polignac number, because 12113431005 - 2³ = 12113430997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 542665 + ... + 564545.

It is an arithmetic number, because the mean of its divisors is an integer number (347398632).

Almost surely, 2^12113431005 is an apocalyptic number.

12113431005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12113431005 is a deficient number, since it is larger than the sum of its proper divisors (10120081443).

12113431005 is a wasteful number, since it uses less digits than its factorization.

12113431005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22086.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 12113431005 its reverse (50013431121), we get a palindrome (62126862126).

The spelling of 12113431005 in words is "twelve billion, one hundred thirteen million, four hundred thirty-one thousand, five".