11321001031 has 2 divisors, whose sum is σ = 11321001032. Its totient is φ = 11321001030.

The previous prime is 11321001023. The next prime is 11321001053. The reversal of 11321001031 is 13010012311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11321001031 - 2³ = 11321001023 is a prime.

It is a super-2 number, since 2×11321001031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11321071031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660500515 + 5660500516.

It is an arithmetic number, because the mean of its divisors is an integer number (5660500516).

Almost surely, 2^11321001031 is an apocalyptic number.

11321001031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321001031 is an equidigital number, since it uses as much as digits as its factorization.

11321001031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 11321001031 its reverse (13010012311), we get a palindrome (24331013342).

The spelling of 11321001031 in words is "eleven billion, three hundred twenty-one million, one thousand, thirty-one".