2231305057 has 2 divisors, whose sum is σ = 2231305058. Its totient is φ = 2231305056.

The previous prime is 2231304991. The next prime is 2231305061. The reversal of 2231305057 is 7505031322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2220388641 + 10916416 = 47121^2 + 3304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231305057 is a prime.

It is a super-3 number, since 3×2231305057³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2231305957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115652528 + 1115652529.

It is an arithmetic number, because the mean of its divisors is an integer number (1115652529).

Almost surely, 2^2231305057 is an apocalyptic number.

It is an amenable number.

2231305057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231305057 is an equidigital number, since it uses as much as digits as its factorization.

2231305057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 2231305057 is about 47236.6918507213. The cubic root of 2231305057 is about 1306.7313684107.

Adding to 2231305057 its reverse (7505031322), we get a palindrome (9736336379).

The spelling of 2231305057 in words is "two billion, two hundred thirty-one million, three hundred five thousand, fifty-seven".