10311821609 has 2 divisors, whose sum is σ = 10311821610. Its totient is φ = 10311821608.

The previous prime is 10311821581. The next prime is 10311821623. The reversal of 10311821609 is 90612811301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8723560000 + 1588261609 = 93400^2 + 39853^2 .

It is a cyclic number.

It is not a de Polignac number, because 10311821609 - 2¹⁶ = 10311756073 is a prime.

It is not a weakly prime, because it can be changed into another prime (10311821659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5155910804 + 5155910805.

It is an arithmetic number, because the mean of its divisors is an integer number (5155910805).

Almost surely, 2^10311821609 is an apocalyptic number.

It is an amenable number.

10311821609 is a deficient number, since it is larger than the sum of its proper divisors (1).

10311821609 is an equidigital number, since it uses as much as digits as its factorization.

10311821609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 10311821609 in words is "ten billion, three hundred eleven million, eight hundred twenty-one thousand, six hundred nine".