311212113253 has 2 divisors, whose sum is σ = 311212113254. Its totient is φ = 311212113252.

The previous prime is 311212113211. The next prime is 311212113269. The reversal of 311212113253 is 352311212113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299802241764 + 11409871489 = 547542^2 + 106817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311212113253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311212153253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155606056626 + 155606056627.

It is an arithmetic number, because the mean of its divisors is an integer number (155606056627).

Almost surely, 2^311212113253 is an apocalyptic number.

It is an amenable number.

311212113253 is a deficient number, since it is larger than the sum of its proper divisors (1).

311212113253 is an equidigital number, since it uses as much as digits as its factorization.

311212113253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

Adding to 311212113253 its reverse (352311212113), we get a palindrome (663523325366).

The spelling of 311212113253 in words is "three hundred eleven billion, two hundred twelve million, one hundred thirteen thousand, two hundred fifty-three".