11230031321 has 2 divisors, whose sum is σ = 11230031322. Its totient is φ = 11230031320.

The previous prime is 11230031291. The next prime is 11230031341. The reversal of 11230031321 is 12313003211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11210574400 + 19456921 = 105880^2 + 4411^2 .

It is a cyclic number.

It is not a de Polignac number, because 11230031321 - 2⁶ = 11230031257 is a prime.

It is a super-2 number, since 2×11230031321² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11230031321.

It is not a weakly prime, because it can be changed into another prime (11230031341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615015660 + 5615015661.

It is an arithmetic number, because the mean of its divisors is an integer number (5615015661).

Almost surely, 2^11230031321 is an apocalyptic number.

It is an amenable number.

11230031321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11230031321 is an equidigital number, since it uses as much as digits as its factorization.

11230031321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11230031321 its reverse (12313003211), we get a palindrome (23543034532).

The spelling of 11230031321 in words is "eleven billion, two hundred thirty million, thirty-one thousand, three hundred twenty-one".