31212101123102 has 8 divisors (see below), whose sum is σ = 46820022166512. Its totient is φ = 15605427067600.

The previous prime is 31212101123101. The next prime is 31212101123129. The reversal of 31212101123102 is 20132110121213.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212101123101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311684399 + ... + 311784522.

It is an arithmetic number, because the mean of its divisors is an integer number (5852502770814).

Almost surely, 2^{31212101123102} is an apocalyptic number.

31212101123102 is a deficient number, since it is larger than the sum of its proper divisors (15607921043410).

31212101123102 is a wasteful number, since it uses less digits than its factorization.

31212101123102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623493954.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 31212101123102 its reverse (20132110121213), we get a palindrome (51344211244315).

The spelling of 31212101123102 in words is "thirty-one trillion, two hundred twelve billion, one hundred one million, one hundred twenty-three thousand, one hundred two".