245420311 has 4 divisors (see below), whose sum is σ = 245803824. Its totient is φ = 245036800.

The previous prime is 245420303. The next prime is 245420317. The reversal of 245420311 is 113024542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245420311 - 2³ = 245420303 is a prime.

It is a super-2 number, since 2×245420311² = 120462258102673442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245420317) 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 in 3 ways as a sum of consecutive naturals, for example, 190795 + ... + 192076.

It is an arithmetic number, because the mean of its divisors is an integer number (61450956).

Almost surely, 2^245420311 is an apocalyptic number.

245420311 is a deficient number, since it is larger than the sum of its proper divisors (383513).

245420311 is an equidigital number, since it uses as much as digits as its factorization.

245420311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383512.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 245420311 is about 15665.8964314207. The cubic root of 245420311 is about 626.0900963186.

Adding to 245420311 its reverse (113024542), we get a palindrome (358444853).

The spelling of 245420311 in words is "two hundred forty-five million, four hundred twenty thousand, three hundred eleven".