31303222013011 has 16 divisors (see below), whose sum is σ = 33739378032640. Its totient is φ = 28871099943840.

The previous prime is 31303222012991. The next prime is 31303222013081. The reversal of 31303222013011 is 11031022230313.

It is a cyclic number.

It is not a de Polignac number, because 31303222013011 - 2¹⁵ = 31303221980243 is a prime.

It is a super-2 number, since 2×31303222013011² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31303222013081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279759406 + ... + 279871276.

It is an arithmetic number, because the mean of its divisors is an integer number (2108711127040).

Almost surely, 2^{31303222013011} is an apocalyptic number.

31303222013011 is a deficient number, since it is larger than the sum of its proper divisors (2436156019629).

31303222013011 is a wasteful number, since it uses less digits than its factorization.

31303222013011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129706.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31303222013011 its reverse (11031022230313), we get a palindrome (42334244243324).

The spelling of 31303222013011 in words is "thirty-one trillion, three hundred three billion, two hundred twenty-two million, thirteen thousand, eleven".