11311320201031 has 2 divisors, whose sum is σ = 11311320201032. Its totient is φ = 11311320201030.

The previous prime is 11311320200989. The next prime is 11311320201043. The reversal of 11311320201031 is 13010202311311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11311320201031 - 2³³ = 11302730266439 is a prime.

It is a super-2 number, since 2×11311320201031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11311320201331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655660100515 + 5655660100516.

It is an arithmetic number, because the mean of its divisors is an integer number (5655660100516).

Almost surely, 2^{11311320201031} is an apocalyptic number.

11311320201031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311320201031 is an equidigital number, since it uses as much as digits as its factorization.

11311320201031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 11311320201031 its reverse (13010202311311), we get a palindrome (24321522512342).

The spelling of 11311320201031 in words is "eleven trillion, three hundred eleven billion, three hundred twenty million, two hundred one thousand, thirty-one".