311341643723 has 4 divisors (see below), whose sum is σ = 339645429528. Its totient is φ = 283037857920.

The previous prime is 311341643713. The next prime is 311341643747. The reversal of 311341643723 is 327346143113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311341643723 - 2⁶ = 311341643659 is a prime.

It is a super-2 number, since 2×311341643723² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311341643713) 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, 14151892886 + ... + 14151892907.

It is an arithmetic number, because the mean of its divisors is an integer number (84911357382).

Almost surely, 2^311341643723 is an apocalyptic number.

311341643723 is a deficient number, since it is larger than the sum of its proper divisors (28303785805).

311341643723 is a wasteful number, since it uses less digits than its factorization.

311341643723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28303785804.

The product of its digits is 108864, while the sum is 38.

Adding to 311341643723 its reverse (327346143113), we get a palindrome (638687786836).

The spelling of 311341643723 in words is "three hundred eleven billion, three hundred forty-one million, six hundred forty-three thousand, seven hundred twenty-three".