11001321031 has 2 divisors, whose sum is σ = 11001321032. Its totient is φ = 11001321030.

The previous prime is 11001321017. The next prime is 11001321041. The reversal of 11001321031 is 13012310011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11001321031 - 2²⁹ = 10464450119 is a prime.

It is a super-2 number, since 2×11001321031² (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 (11001321041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500660515 + 5500660516.

It is an arithmetic number, because the mean of its divisors is an integer number (5500660516).

Almost surely, 2^11001321031 is an apocalyptic number.

11001321031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001321031 is an equidigital number, since it uses as much as digits as its factorization.

11001321031 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 11001321031 its reverse (13012310011), we get a palindrome (24013631042).

It can be divided in two parts, 110013 and 21031, that added together give a square (131044 = 362²).

The spelling of 11001321031 in words is "eleven billion, one million, three hundred twenty-one thousand, thirty-one".