311230042853 has 4 divisors (see below), whose sum is σ = 311473763820. Its totient is φ = 310986321888.

The previous prime is 311230042813. The next prime is 311230042861. The reversal of 311230042853 is 358240032113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 358240032113 = 24793 ⋅14449241.

It can be written as a sum of positive squares in 2 ways, for example, as 230882172004 + 80347870849 = 480502^2 + 283457^2 .

It is a cyclic number.

It is not a de Polignac number, because 311230042853 - 2¹⁸ = 311229780709 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 (311230042813) 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, 121858568 + ... + 121861121.

It is an arithmetic number, because the mean of its divisors is an integer number (77868440955).

Almost surely, 2^311230042853 is an apocalyptic number.

It is an amenable number.

311230042853 is a deficient number, since it is larger than the sum of its proper divisors (243720967).

311230042853 is a wasteful number, since it uses less digits than its factorization.

311230042853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243720966.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 311230042853 its reverse (358240032113), we get a palindrome (669470074966).

The spelling of 311230042853 in words is "three hundred eleven billion, two hundred thirty million, forty-two thousand, eight hundred fifty-three".