31323112031211 has 64 divisors (see below), whose sum is σ = 56130302592000. Its totient is φ = 15005244925440.

The previous prime is 31323112031129. The next prime is 31323112031213. The reversal of 31323112031211 is 11213021132313.

It is not a de Polignac number, because 31323112031211 - 2¹³ = 31323112023019 is a prime.

It is a super-2 number, since 2×31323112031211² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31323112031213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2106336 + ... + 8190413.

It is an arithmetic number, because the mean of its divisors is an integer number (877035978000).

Almost surely, 2^{31323112031211} is an apocalyptic number.

31323112031211 is a deficient number, since it is larger than the sum of its proper divisors (24807190560789).

31323112031211 is a wasteful number, since it uses less digits than its factorization.

31323112031211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10297796.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 31323112031211 its reverse (11213021132313), we get a palindrome (42536133163524).

The spelling of 31323112031211 in words is "thirty-one trillion, three hundred twenty-three billion, one hundred twelve million, thirty-one thousand, two hundred eleven".