245311054321 has 2 divisors, whose sum is σ = 245311054322. Its totient is φ = 245311054320.

The previous prime is 245311054291. The next prime is 245311054349. The reversal of 245311054321 is 123450113542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167784448225 + 77526606096 = 409615^2 + 278436^2 .

It is a cyclic number.

It is not a de Polignac number, because 245311054321 - 2⁹ = 245311053809 is a prime.

It is a super-2 number, since 2×245311054321² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245311054381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122655527160 + 122655527161.

It is an arithmetic number, because the mean of its divisors is an integer number (122655527161).

Almost surely, 2^245311054321 is an apocalyptic number.

It is an amenable number.

245311054321 is a deficient number, since it is larger than the sum of its proper divisors (1).

245311054321 is an equidigital number, since it uses as much as digits as its factorization.

245311054321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 245311054321 its reverse (123450113542), we get a palindrome (368761167863).

The spelling of 245311054321 in words is "two hundred forty-five billion, three hundred eleven million, fifty-four thousand, three hundred twenty-one".