311120131 has 8 divisors (see below), whose sum is σ = 356186720. Its totient is φ = 266208768.

The previous prime is 311120129. The next prime is 311120143. The reversal of 311120131 is 131021113.

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

It is not a de Polignac number, because 311120131 - 2¹ = 311120129 is a prime.

It is a super-2 number, since 2×311120131² = 193591471826914322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34476 + ... + 42553.

It is an arithmetic number, because the mean of its divisors is an integer number (44523340).

Almost surely, 2^311120131 is an apocalyptic number.

311120131 is a deficient number, since it is larger than the sum of its proper divisors (45066589).

311120131 is an equidigital number, since it uses as much as digits as its factorization.

311120131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77613.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 311120131 is about 17638.5977617270. The cubic root of 311120131 is about 677.6041195625.

Adding to 311120131 its reverse (131021113), we get a palindrome (442141244).

The spelling of 311120131 in words is "three hundred eleven million, one hundred twenty thousand, one hundred thirty-one".