1351210681 has 2 divisors, whose sum is σ = 1351210682. Its totient is φ = 1351210680.

The previous prime is 1351210657. The next prime is 1351210703. The reversal of 1351210681 is 1860121531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1031373225 + 319837456 = 32115^2 + 17884^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351210681 - 2⁵ = 1351210649 is a prime.

It is a super-2 number, since 2×1351210681² = 3651540608896967522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1351210181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675605340 + 675605341.

It is an arithmetic number, because the mean of its divisors is an integer number (675605341).

Almost surely, 2^1351210681 is an apocalyptic number.

It is an amenable number.

1351210681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351210681 is an equidigital number, since it uses as much as digits as its factorization.

1351210681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1351210681 is about 36758.8177312601. The cubic root of 1351210681 is about 1105.5397350960.

The spelling of 1351210681 in words is "one billion, three hundred fifty-one million, two hundred ten thousand, six hundred eighty-one".