1351501243 has 2 divisors, whose sum is σ = 1351501244. Its totient is φ = 1351501242.

The previous prime is 1351501231. The next prime is 1351501247. The reversal of 1351501243 is 3421051531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1351501243 - 2¹³ = 1351493051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1351501247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675750621 + 675750622.

It is an arithmetic number, because the mean of its divisors is an integer number (675750622).

Almost surely, 2^1351501243 is an apocalyptic number.

1351501243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351501243 is an equidigital number, since it uses as much as digits as its factorization.

1351501243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1351501243 is about 36762.7697949978. The cubic root of 1351501243 is about 1105.6189738652.

Adding to 1351501243 its reverse (3421051531), we get a palindrome (4772552774).

The spelling of 1351501243 in words is "one billion, three hundred fifty-one million, five hundred one thousand, two hundred forty-three".