311342123 has 2 divisors, whose sum is σ = 311342124. Its totient is φ = 311342122.

The previous prime is 311342107. The next prime is 311342137. The reversal of 311342123 is 321243113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311342123 - 2⁴ = 311342107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311342095 and 311342104.

It is not a weakly prime, because it can be changed into another prime (311342023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155671061 + 155671062.

It is an arithmetic number, because the mean of its divisors is an integer number (155671062).

Almost surely, 2^311342123 is an apocalyptic number.

311342123 is a deficient number, since it is larger than the sum of its proper divisors (1).

311342123 is an equidigital number, since it uses as much as digits as its factorization.

311342123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 311342123 is about 17644.8894300871. The cubic root of 311342123 is about 677.7652437458.

Adding to 311342123 its reverse (321243113), we get a palindrome (632585236).

The spelling of 311342123 in words is "three hundred eleven million, three hundred forty-two thousand, one hundred twenty-three".