1351142581 has 2 divisors, whose sum is σ = 1351142582. Its totient is φ = 1351142580.

The previous prime is 1351142561. The next prime is 1351142587. The reversal of 1351142581 is 1852411531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1211666481 + 139476100 = 34809^2 + 11810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351142581 - 2²⁹ = 814271669 is a prime.

It is a super-2 number, since 2×1351142581² = 3651172548382683122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351142587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675571290 + 675571291.

It is an arithmetic number, because the mean of its divisors is an integer number (675571291).

Almost surely, 2^1351142581 is an apocalyptic number.

It is an amenable number.

1351142581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351142581 is an equidigital number, since it uses as much as digits as its factorization.

1351142581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 31.

The square root of 1351142581 is about 36757.8914112330. The cubic root of 1351142581 is about 1105.5211619942.

The spelling of 1351142581 in words is "one billion, three hundred fifty-one million, one hundred forty-two thousand, five hundred eighty-one".