31320123030123 has 16 divisors (see below), whose sum is σ = 42266005541760. Its totient is φ = 20627193495744.

The previous prime is 31320123030113. The next prime is 31320123030149. The reversal of 31320123030123 is 32103032102313.

It is not a de Polignac number, because 31320123030123 - 2⁴ = 31320123030107 is a prime.

It is a super-3 number, since 3×31320123030123³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 31320123030093 and 31320123030102.

It is not an unprimeable number, because it can be changed into a prime (31320123030113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125338 + ... + 7915551.

It is an arithmetic number, because the mean of its divisors is an integer number (2641625346360).

Almost surely, 2^{31320123030123} is an apocalyptic number.

31320123030123 is a deficient number, since it is larger than the sum of its proper divisors (10945882511637).

31320123030123 is a wasteful number, since it uses less digits than its factorization.

31320123030123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8056618.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31320123030123 its reverse (32103032102313), we get a palindrome (63423155132436).

The spelling of 31320123030123 in words is "thirty-one trillion, three hundred twenty billion, one hundred twenty-three million, thirty thousand, one hundred twenty-three".