311000111213131 has 4 divisors (see below), whose sum is σ = 311000247920952. Its totient is φ = 310999974505312.

The previous prime is 311000111213123. The next prime is 311000111213171. The reversal of 311000111213131 is 131312111000113.

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 311000111213131 - 2³ = 311000111213123 is a prime.

It is a super-2 number, since 2×311000111213131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311000111213099 and 311000111213108.

It is not an unprimeable number, because it can be changed into a prime (311000111213171) 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, 64882765 + ... + 69510958.

It is an arithmetic number, because the mean of its divisors is an integer number (77750061980238).

Almost surely, 2^{311000111213131} is an apocalyptic number.

311000111213131 is a deficient number, since it is larger than the sum of its proper divisors (136707821).

311000111213131 is a wasteful number, since it uses less digits than its factorization.

311000111213131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136707820.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 311000111213131 its reverse (131312111000113), we get a palindrome (442312222213244).

The spelling of 311000111213131 in words is "three hundred eleven trillion, one hundred eleven million, two hundred thirteen thousand, one hundred thirty-one".