1351011257 has 2 divisors, whose sum is σ = 1351011258. Its totient is φ = 1351011256.

The previous prime is 1351011241. The next prime is 1351011349. The reversal of 1351011257 is 7521101531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 901740841 + 449270416 = 30029^2 + 21196^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351011257 - 2⁴ = 1351011241 is a prime.

It is not a weakly prime, because it can be changed into another prime (1351016257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675505628 + 675505629.

It is an arithmetic number, because the mean of its divisors is an integer number (675505629).

Almost surely, 2^1351011257 is an apocalyptic number.

It is an amenable number.

1351011257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351011257 is an equidigital number, since it uses as much as digits as its factorization.

1351011257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 1351011257 is about 36756.1050303212. The cubic root of 1351011257 is about 1105.4853438733.

Adding to 1351011257 its reverse (7521101531), we get a palindrome (8872112788).

The spelling of 1351011257 in words is "one billion, three hundred fifty-one million, eleven thousand, two hundred fifty-seven".