31313000021103 has 12 divisors (see below), whose sum is σ = 45996497206920. Its totient is φ = 20521514137776.

The previous prime is 31313000021041. The next prime is 31313000021119. The reversal of 31313000021103 is 30112000031313.

It is a happy number.

It is not a de Polignac number, because 31313000021103 - 2⁹ = 31313000020591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313000021183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29484933576 + ... + 29484934637.

It is an arithmetic number, because the mean of its divisors is an integer number (3833041433910).

Almost surely, 2^{31313000021103} is an apocalyptic number.

31313000021103 is a deficient number, since it is larger than the sum of its proper divisors (14683497185817).

31313000021103 is a wasteful number, since it uses less digits than its factorization.

31313000021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58969868278 (or 58969868275 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31313000021103 its reverse (30112000031313), we get a palindrome (61425000052416).

The spelling of 31313000021103 in words is "thirty-one trillion, three hundred thirteen billion, twenty-one thousand, one hundred three".