31212103110123 has 8 divisors (see below), whose sum is σ = 44817378824848. Its totient is φ = 19207448067744.

The previous prime is 31212103110113. The next prime is 31212103110169. The reversal of 31212103110123 is 32101130121213.

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

It is not a de Polignac number, because 31212103110123 - 2²⁴ = 31212086332907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31212103110123.

It is not an unprimeable number, because it can be changed into a prime (31212103110113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400155168040 + ... + 400155168117.

It is an arithmetic number, because the mean of its divisors is an integer number (5602172353106).

Almost surely, 2^{31212103110123} is an apocalyptic number.

31212103110123 is a deficient number, since it is larger than the sum of its proper divisors (13605275714725).

31212103110123 is a wasteful number, since it uses less digits than its factorization.

31212103110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800310336173.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 31212103110123 its reverse (32101130121213), we get a palindrome (63313233231336).

The spelling of 31212103110123 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred ten thousand, one hundred twenty-three".