245211311 has 2 divisors, whose sum is σ = 245211312. Its totient is φ = 245211310.

The previous prime is 245211301. The next prime is 245211341. The reversal of 245211311 is 113112542.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245211311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245211301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122605655 + 122605656.

It is an arithmetic number, because the mean of its divisors is an integer number (122605656).

Almost surely, 2^245211311 is an apocalyptic number.

245211311 is a deficient number, since it is larger than the sum of its proper divisors (1).

245211311 is an equidigital number, since it uses as much as digits as its factorization.

245211311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 245211311 is about 15659.2244699410. The cubic root of 245211311 is about 625.9123196818.

Adding to 245211311 its reverse (113112542), we get a palindrome (358323853).

The spelling of 245211311 in words is "two hundred forty-five million, two hundred eleven thousand, three hundred eleven".