1303231103257 has 2 divisors, whose sum is σ = 1303231103258. Its totient is φ = 1303231103256.

The previous prime is 1303231103201. The next prime is 1303231103333. The reversal of 1303231103257 is 7523011323031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1108259402121 + 194971701136 = 1052739^2 + 441556^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303231103257 - 2¹⁵ = 1303231070489 is a prime.

It is a super-2 number, since 2×1303231103257² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1303231103857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651615551628 + 651615551629.

It is an arithmetic number, because the mean of its divisors is an integer number (651615551629).

Almost surely, 2^{1303231103257} is an apocalyptic number.

It is an amenable number.

1303231103257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303231103257 is an equidigital number, since it uses as much as digits as its factorization.

1303231103257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 31.

Adding to 1303231103257 its reverse (7523011323031), we get a palindrome (8826242426288).

The spelling of 1303231103257 in words is "one trillion, three hundred three billion, two hundred thirty-one million, one hundred three thousand, two hundred fifty-seven".