31121002013223 has 8 divisors (see below), whose sum is σ = 41612217990768. Its totient is φ = 20688560355584.

The previous prime is 31121002013221. The next prime is 31121002013251. The reversal of 31121002013223 is 32231020012113.

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 31121002013223 - 2¹ = 31121002013221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31121002013223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31121002013221) 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, 14693578740 + ... + 14693580857.

It is an arithmetic number, because the mean of its divisors is an integer number (5201527248846).

Almost surely, 2^{31121002013223} is an apocalyptic number.

31121002013223 is a deficient number, since it is larger than the sum of its proper divisors (10491215977545).

31121002013223 is a wasteful number, since it uses less digits than its factorization.

31121002013223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29387159953.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31121002013223 its reverse (32231020012113), we get a palindrome (63352022025336).

The spelling of 31121002013223 in words is "thirty-one trillion, one hundred twenty-one billion, two million, thirteen thousand, two hundred twenty-three".