12344431505 has 32 divisors (see below), whose sum is σ = 17071726848. Its totient is φ = 8393932800.

The previous prime is 12344431487. The next prime is 12344431523. The reversal of 12344431505 is 50513444321.

It is an interprime number because it is at equal distance from previous prime (12344431487) and next prime (12344431523).

It is not a de Polignac number, because 12344431505 - 2¹⁰ = 12344430481 is a prime.

It is a super-3 number, since 3×12344431505³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2233145 + ... + 2238665.

It is an arithmetic number, because the mean of its divisors is an integer number (533491464).

Almost surely, 2^12344431505 is an apocalyptic number.

It is an amenable number.

12344431505 is a deficient number, since it is larger than the sum of its proper divisors (4727295343).

12344431505 is a wasteful number, since it uses less digits than its factorization.

12344431505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6057.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 12344431505 its reverse (50513444321), we get a palindrome (62857875826).

The spelling of 12344431505 in words is "twelve billion, three hundred forty-four million, four hundred thirty-one thousand, five hundred five".