31113112201 has 2 divisors, whose sum is σ = 31113112202. Its totient is φ = 31113112200.

The previous prime is 31113112189. The next prime is 31113112213. The reversal of 31113112201 is 10221131113.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (31113112189) and next prime (31113112213).

It can be written as a sum of positive squares in only one way, i.e., 17338568976 + 13774543225 = 131676^2 + 117365^2 .

It is a cyclic number.

It is not a de Polignac number, because 31113112201 - 2⁷ = 31113112073 is a prime.

It is not a weakly prime, because it can be changed into another prime (31113112271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556556100 + 15556556101.

It is an arithmetic number, because the mean of its divisors is an integer number (15556556101).

Almost surely, 2^31113112201 is an apocalyptic number.

It is an amenable number.

31113112201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113112201 is an equidigital number, since it uses as much as digits as its factorization.

31113112201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 31113112201 its reverse (10221131113), we get a palindrome (41334243314).

The spelling of 31113112201 in words is "thirty-one billion, one hundred thirteen million, one hundred twelve thousand, two hundred one".