31210102113 has 16 divisors (see below), whose sum is σ = 42452315136. Its totient is φ = 20390822480.

The previous prime is 31210102087. The next prime is 31210102117. The reversal of 31210102113 is 31120101213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31210102113 - 2⁵ = 31210102081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31210102092 and 31210102101.

It is not an unprimeable number, because it can be changed into a prime (31210102117) 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, 403131 + ... + 474272.

It is an arithmetic number, because the mean of its divisors is an integer number (2653269696).

Almost surely, 2^31210102113 is an apocalyptic number.

It is an amenable number.

31210102113 is a deficient number, since it is larger than the sum of its proper divisors (11242213023).

31210102113 is a wasteful number, since it uses less digits than its factorization.

31210102113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877644.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31210102113 its reverse (31120101213), we get a palindrome (62330203326).

The spelling of 31210102113 in words is "thirty-one billion, two hundred ten million, one hundred two thousand, one hundred thirteen".