311012123 has 2 divisors, whose sum is σ = 311012124. Its totient is φ = 311012122.

The previous prime is 311012089. The next prime is 311012147. The reversal of 311012123 is 321210113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311012123 - 2²⁰ = 309963547 is a prime.

It is a super-3 number, since 3×311012123³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311012098 and 311012107.

It is not a weakly prime, because it can be changed into another prime (311012173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155506061 + 155506062.

It is an arithmetic number, because the mean of its divisors is an integer number (155506062).

Almost surely, 2^311012123 is an apocalyptic number.

311012123 is a deficient number, since it is larger than the sum of its proper divisors (1).

311012123 is an equidigital number, since it uses as much as digits as its factorization.

311012123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 311012123 is about 17635.5358013302. The cubic root of 311012123 is about 677.5256984756.

Adding to 311012123 its reverse (321210113), we get a palindrome (632222236).

The spelling of 311012123 in words is "three hundred eleven million, twelve thousand, one hundred twenty-three".