31122103123 has 8 divisors (see below), whose sum is σ = 31428051200. Its totient is φ = 30816228168.

The previous prime is 31122103097. The next prime is 31122103153. The reversal of 31122103123 is 32130122113.

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

It is a cyclic number.

It is not a de Polignac number, because 31122103123 - 2⁹ = 31122102611 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 31122103123.

It is not an unprimeable number, because it can be changed into a prime (31122103153) 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, 1300258 + ... + 1323976.

It is an arithmetic number, because the mean of its divisors is an integer number (3928506400).

Almost surely, 2^31122103123 is an apocalyptic number.

31122103123 is a deficient number, since it is larger than the sum of its proper divisors (305948077).

31122103123 is a wasteful number, since it uses less digits than its factorization.

31122103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36561.

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

Adding to 31122103123 its reverse (32130122113), we get a palindrome (63252225236).

The spelling of 31122103123 in words is "thirty-one billion, one hundred twenty-two million, one hundred three thousand, one hundred twenty-three".