1351021291 has 2 divisors, whose sum is σ = 1351021292. Its totient is φ = 1351021290.

The previous prime is 1351021283. The next prime is 1351021327. The reversal of 1351021291 is 1921201531.

It is a weak prime.

It is an emirp because it is prime and its reverse (1921201531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1351021291 - 2³ = 1351021283 is a prime.

It is not a weakly prime, because it can be changed into another prime (1351021211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675510645 + 675510646.

It is an arithmetic number, because the mean of its divisors is an integer number (675510646).

Almost surely, 2^1351021291 is an apocalyptic number.

1351021291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351021291 is an equidigital number, since it uses as much as digits as its factorization.

1351021291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 1351021291 is about 36756.2415243996. The cubic root of 1351021291 is about 1105.4880806905.

The spelling of 1351021291 in words is "one billion, three hundred fifty-one million, twenty-one thousand, two hundred ninety-one".