1321250093 has 2 divisors, whose sum is σ = 1321250094. Its totient is φ = 1321250092.

The previous prime is 1321250027. The next prime is 1321250143. The reversal of 1321250093 is 3900521231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1288953604 + 32296489 = 35902^2 + 5683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321250093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321250003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660625046 + 660625047.

It is an arithmetic number, because the mean of its divisors is an integer number (660625047).

Almost surely, 2^1321250093 is an apocalyptic number.

It is an amenable number.

1321250093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321250093 is an equidigital number, since it uses as much as digits as its factorization.

1321250093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1321250093 is about 36349.0040166165. The cubic root of 1321250093 is about 1097.3074900294.

The spelling of 1321250093 in words is "one billion, three hundred twenty-one million, two hundred fifty thousand, ninety-three".