31112320031101 has 2 divisors, whose sum is σ = 31112320031102. Its totient is φ = 31112320031100.

The previous prime is 31112320031047. The next prime is 31112320031119. The reversal of 31112320031101 is 10113002321113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18785515019076 + 12326805012025 = 4334226^2 + 3510955^2 .

It is a cyclic number.

It is not a de Polignac number, because 31112320031101 - 2¹¹ = 31112320029053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31112320031131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556160015550 + 15556160015551.

It is an arithmetic number, because the mean of its divisors is an integer number (15556160015551).

Almost surely, 2^{31112320031101} is an apocalyptic number.

It is an amenable number.

31112320031101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112320031101 is an equidigital number, since it uses as much as digits as its factorization.

31112320031101 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 31112320031101 its reverse (10113002321113), we get a palindrome (41225322352214).

The spelling of 31112320031101 in words is "thirty-one trillion, one hundred twelve billion, three hundred twenty million, thirty-one thousand, one hundred one".