31313011011113 has 16 divisors (see below), whose sum is σ = 33752478928896. Its totient is φ = 28877941713600.

The previous prime is 31313011011103. The next prime is 31313011011133. The reversal of 31313011011113 is 31111011031313.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31313011011113 - 2⁴ = 31313011011097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31313011011103) 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, 655101131 + ... + 655148927.

It is an arithmetic number, because the mean of its divisors is an integer number (2109529933056).

Almost surely, 2^{31313011011113} is an apocalyptic number.

It is an amenable number.

31313011011113 is a deficient number, since it is larger than the sum of its proper divisors (2439467917783).

31313011011113 is a wasteful number, since it uses less digits than its factorization.

31313011011113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92744.

The product of its (nonzero) digits is 81, while the sum is 20.

Adding to 31313011011113 its reverse (31111011031313), we get a palindrome (62424022042426).

It can be divided in two parts, 3131301 and 1011113, that added together give a palindrome (4142414).

The spelling of 31313011011113 in words is "thirty-one trillion, three hundred thirteen billion, eleven million, eleven thousand, one hundred thirteen".