311411513005231 has 8 divisors (see below), whose sum is σ = 321756035763744. Its totient is φ = 301232502611040.

The previous prime is 311411513005217. The next prime is 311411513005249. The reversal of 311411513005231 is 132500315114113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311411513005231 - 2²⁹ = 311410976134319 is a prime.

It is a super-2 number, since 2×311411513005231² (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 = 311411513005193 and 311411513005202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311411513005211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41378087256 + ... + 41378094781.

It is an arithmetic number, because the mean of its divisors is an integer number (40219504470468).

Almost surely, 2^{311411513005231} is an apocalyptic number.

311411513005231 is a deficient number, since it is larger than the sum of its proper divisors (10344522758513).

311411513005231 is an equidigital number, since it uses as much as digits as its factorization.

311411513005231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82756182161.

The product of its (nonzero) digits is 5400, while the sum is 31.

Adding to 311411513005231 its reverse (132500315114113), we get a palindrome (443911828119344).

The spelling of 311411513005231 in words is "three hundred eleven trillion, four hundred eleven billion, five hundred thirteen million, five thousand, two hundred thirty-one".