31311020230102 has 8 divisors (see below), whose sum is σ = 46966554091800. Its totient is φ = 15655502199504.

The previous prime is 31311020230043. The next prime is 31311020230129. The reversal of 31311020230102 is 20103202011313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31311020230102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5706649 + ... + 9756427.

It is an arithmetic number, because the mean of its divisors is an integer number (5870819261475).

Almost surely, 2^{31311020230102} is an apocalyptic number.

31311020230102 is a deficient number, since it is larger than the sum of its proper divisors (15655533861698).

31311020230102 is a wasteful number, since it uses less digits than its factorization.

31311020230102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7915550.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31311020230102 its reverse (20103202011313), we get a palindrome (51414222241415).

The spelling of 31311020230102 in words is "thirty-one trillion, three hundred eleven billion, twenty million, two hundred thirty thousand, one hundred two".