31311121102102 has 8 divisors (see below), whose sum is σ = 46967931577800. Its totient is φ = 15655143909504.

The previous prime is 31311121102097. The next prime is 31311121102117. The reversal of 31311121102102 is 20120112111313.

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 31311121102102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208226827 + ... + 208377142.

It is an arithmetic number, because the mean of its divisors is an integer number (5870991447225).

Almost surely, 2^{31311121102102} is an apocalyptic number.

31311121102102 is a deficient number, since it is larger than the sum of its proper divisors (15656810475698).

31311121102102 is a wasteful number, since it uses less digits than its factorization.

31311121102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416641550.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 31311121102102 its reverse (20120112111313), we get a palindrome (51431233213415).

The spelling of 31311121102102 in words is "thirty-one trillion, three hundred eleven billion, one hundred twenty-one million, one hundred two thousand, one hundred two".