12311540144 has 10 divisors (see below), whose sum is σ = 23853609060. Its totient is φ = 6155770064.

The previous prime is 12311540093. The next prime is 12311540159. The reversal of 12311540144 is 44104511321.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384735614 + ... + 384735645.

It is an arithmetic number, because the mean of its divisors is an integer number (2385360906).

Almost surely, 2^12311540144 is an apocalyptic number.

It is an amenable number.

12311540144 is a deficient number, since it is larger than the sum of its proper divisors (11542068916).

12311540144 is an equidigital number, since it uses as much as digits as its factorization.

12311540144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769471267 (or 769471261 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The spelling of 12311540144 in words is "twelve billion, three hundred eleven million, five hundred forty thousand, one hundred forty-four".