311323032031 has 4 divisors (see below), whose sum is σ = 339625125864. Its totient is φ = 283020938200.

The previous prime is 311323032019. The next prime is 311323032089. The reversal of 311323032031 is 130230323113.

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

It is not a de Polignac number, because 311323032031 - 2²⁷ = 311188814303 is a prime.

It is a super-3 number, since 3×311323032031³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311323031993 and 311323032011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311323032011) 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, 14151046900 + ... + 14151046921.

It is an arithmetic number, because the mean of its divisors is an integer number (84906281466).

Almost surely, 2^311323032031 is an apocalyptic number.

311323032031 is a deficient number, since it is larger than the sum of its proper divisors (28302093833).

311323032031 is a wasteful number, since it uses less digits than its factorization.

311323032031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28302093832.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 311323032031 its reverse (130230323113), we get a palindrome (441553355144).

The spelling of 311323032031 in words is "three hundred eleven billion, three hundred twenty-three million, thirty-two thousand, thirty-one".