311212111723 has 2 divisors, whose sum is σ = 311212111724. Its totient is φ = 311212111722.

The previous prime is 311212111711. The next prime is 311212111823. The reversal of 311212111723 is 327111212113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311212111723 - 2²¹ = 311210014571 is a prime.

It is not a weakly prime, because it can be changed into another prime (311212111123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155606055861 + 155606055862.

It is an arithmetic number, because the mean of its divisors is an integer number (155606055862).

Almost surely, 2^311212111723 is an apocalyptic number.

311212111723 is a deficient number, since it is larger than the sum of its proper divisors (1).

311212111723 is an equidigital number, since it uses as much as digits as its factorization.

311212111723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 25.

Adding to 311212111723 its reverse (327111212113), we get a palindrome (638323323836).

The spelling of 311212111723 in words is "three hundred eleven billion, two hundred twelve million, one hundred eleven thousand, seven hundred twenty-three".