311245545514613 has 4 divisors (see below), whose sum is σ = 311258529792288. Its totient is φ = 311232561236940.

The previous prime is 311245545514559. The next prime is 311245545514621. The reversal of 311245545514613 is 316415545542113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311245545514613 - 2¹⁰ = 311245545513589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311245545514633) 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, 6492102881 + ... + 6492150822.

It is an arithmetic number, because the mean of its divisors is an integer number (77814632448072).

Almost surely, 2^{311245545514613} is an apocalyptic number.

It is an amenable number.

311245545514613 is a deficient number, since it is larger than the sum of its proper divisors (12984277675).

311245545514613 is a wasteful number, since it uses less digits than its factorization.

311245545514613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12984277674.

The product of its digits is 4320000, while the sum is 50.

The spelling of 311245545514613 in words is "three hundred eleven trillion, two hundred forty-five billion, five hundred forty-five million, five hundred fourteen thousand, six hundred thirteen".