312144613523 has 4 divisors (see below), whose sum is σ = 312145790568. Its totient is φ = 312143436480.

The previous prime is 312144613519. The next prime is 312144613601. The reversal of 312144613523 is 325316441213.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 325316441213 = 37 ⋅8792336249.

It is a cyclic number.

It is not a de Polignac number, because 312144613523 - 2² = 312144613519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312144613723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16808 + ... + 790298.

It is an arithmetic number, because the mean of its divisors is an integer number (78036447642).

Almost surely, 2^312144613523 is an apocalyptic number.

312144613523 is a deficient number, since it is larger than the sum of its proper divisors (1177045).

312144613523 is an equidigital number, since it uses as much as digits as its factorization.

312144613523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177044.

The product of its digits is 51840, while the sum is 35.

The spelling of 312144613523 in words is "three hundred twelve billion, one hundred forty-four million, six hundred thirteen thousand, five hundred twenty-three".