311000131 has 16 divisors (see below), whose sum is σ = 346387104. Its totient is φ = 277415424.

The previous prime is 311000099. The next prime is 311000161. The reversal of 311000131 is 131000113.

It is not a de Polignac number, because 311000131 - 2⁵ = 311000099 is a prime.

It is a super-2 number, since 2×311000131² = 193442162964034322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311000161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42795 + ... + 49531.

It is an arithmetic number, because the mean of its divisors is an integer number (21649194).

Almost surely, 2^311000131 is an apocalyptic number.

311000131 is a deficient number, since it is larger than the sum of its proper divisors (35386973).

311000131 is a wasteful number, since it uses less digits than its factorization.

311000131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6870.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 311000131 is about 17635.1958027123. The cubic root of 311000131 is about 677.5169903556.

Adding to 311000131 its reverse (131000113), we get a palindrome (442000244).

The spelling of 311000131 in words is "three hundred eleven million, one hundred thirty-one", and thus it is an aban number.