31031322113 has 48 divisors (see below), whose sum is σ = 36650907648. Its totient is φ = 26046720000.

The previous prime is 31031322107. The next prime is 31031322169. The reversal of 31031322113 is 31122313013.

It is not a de Polignac number, because 31031322113 - 2⁸ = 31031321857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31031322173) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40776653 + ... + 40777413.

It is an arithmetic number, because the mean of its divisors is an integer number (763560576).

Almost surely, 2^31031322113 is an apocalyptic number.

It is an amenable number.

31031322113 is a deficient number, since it is larger than the sum of its proper divisors (5619585535).

31031322113 is a wasteful number, since it uses less digits than its factorization.

31031322113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034 (or 1017 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31031322113 its reverse (31122313013), we get a palindrome (62153635126).

The spelling of 31031322113 in words is "thirty-one billion, thirty-one million, three hundred twenty-two thousand, one hundred thirteen".