11231031020009 has 2 divisors, whose sum is σ = 11231031020010. Its totient is φ = 11231031020008.

The previous prime is 11231031019987. The next prime is 11231031020071. The reversal of 11231031020009 is 90002013013211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11218500456409 + 12530563600 = 3349403^2 + 111940^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231031020009 - 2³² = 11226736052713 is a prime.

It is a super-2 number, since 2×11231031020009² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11231031020309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615515510004 + 5615515510005.

It is an arithmetic number, because the mean of its divisors is an integer number (5615515510005).

Almost surely, 2^{11231031020009} is an apocalyptic number.

It is an amenable number.

11231031020009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231031020009 is an equidigital number, since it uses as much as digits as its factorization.

11231031020009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 11231031020009 in words is "eleven trillion, two hundred thirty-one billion, thirty-one million, twenty thousand, nine".