31113111101101 has 4 divisors (see below), whose sum is σ = 31124218962204. Its totient is φ = 31102003240000.

The previous prime is 31113111101089. The next prime is 31113111101117. The reversal of 31113111101101 is 10110111131113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21765257355625 + 9347853745476 = 4665325^2 + 3057426^2 .

It is a cyclic number.

It is not a de Polignac number, because 31113111101101 - 2²³ = 31113102712493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113111101701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5553926350 + ... + 5553931951.

It is an arithmetic number, because the mean of its divisors is an integer number (7781054740551).

Almost surely, 2^{31113111101101} is an apocalyptic number.

It is an amenable number.

31113111101101 is a deficient number, since it is larger than the sum of its proper divisors (11107861103).

31113111101101 is a wasteful number, since it uses less digits than its factorization.

31113111101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11107861102.

The product of its (nonzero) digits is 9, while the sum is 16.

Adding to 31113111101101 its reverse (10110111131113), we get a palindrome (41223222232214).

The spelling of 31113111101101 in words is "thirty-one trillion, one hundred thirteen billion, one hundred eleven million, one hundred one thousand, one hundred one".