311212112153 has 2 divisors, whose sum is σ = 311212112154. Its totient is φ = 311212112152.

The previous prime is 311212112087. The next prime is 311212112173. The reversal of 311212112153 is 351211212113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304215124249 + 6996987904 = 551557^2 + 83648^2 .

It is an emirp because it is prime and its reverse (351211212113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311212112153 - 2¹⁸ = 311211850009 is a prime.

It is not a weakly prime, because it can be changed into another prime (311212112173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155606056076 + 155606056077.

It is an arithmetic number, because the mean of its divisors is an integer number (155606056077).

Almost surely, 2^311212112153 is an apocalyptic number.

It is an amenable number.

311212112153 is a deficient number, since it is larger than the sum of its proper divisors (1).

311212112153 is an equidigital number, since it uses as much as digits as its factorization.

311212112153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 23.

Adding to 311212112153 its reverse (351211212113), we get a palindrome (662423324266).

The spelling of 311212112153 in words is "three hundred eleven billion, two hundred twelve million, one hundred twelve thousand, one hundred fifty-three".