12311517045 has 24 divisors (see below), whose sum is σ = 20925326304. Its totient is φ = 6179896576.

The previous prime is 12311517013. The next prime is 12311517047. The reversal of 12311517045 is 54071511321.

It is not a de Polignac number, because 12311517045 - 2⁵ = 12311517013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311517047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1415679 + ... + 1424348.

It is an arithmetic number, because the mean of its divisors is an integer number (871888596).

Almost surely, 2^12311517045 is an apocalyptic number.

12311517045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12311517045 is a deficient number, since it is larger than the sum of its proper divisors (8613809259).

12311517045 is a wasteful number, since it uses less digits than its factorization.

12311517045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840069 (or 2840052 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The spelling of 12311517045 in words is "twelve billion, three hundred eleven million, five hundred seventeen thousand, forty-five".