2311213147 has 2 divisors, whose sum is σ = 2311213148. Its totient is φ = 2311213146.

The previous prime is 2311213141. The next prime is 2311213169. The reversal of 2311213147 is 7413121132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2311213147 - 2³ = 2311213139 is a prime.

It is not a weakly prime, because it can be changed into another prime (2311213141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155606573 + 1155606574.

It is an arithmetic number, because the mean of its divisors is an integer number (1155606574).

Almost surely, 2^2311213147 is an apocalyptic number.

2311213147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311213147 is an equidigital number, since it uses as much as digits as its factorization.

2311213147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 2311213147 is about 48075.0782318656. The cubic root of 2311213147 is about 1322.1477788862.

Adding to 2311213147 its reverse (7413121132), we get a palindrome (9724334279).

The spelling of 2311213147 in words is "two billion, three hundred eleven million, two hundred thirteen thousand, one hundred forty-seven".