31123130020033 has 16 divisors (see below), whose sum is σ = 31586168194560. Its totient is φ = 30663554455296.

The previous prime is 31123130020009. The next prime is 31123130020039. The reversal of 31123130020033 is 33002003132113.

It is a cyclic number.

It is not a de Polignac number, because 31123130020033 - 2³³ = 31114540085441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31123130019986 and 31123130020013.

It is not an unprimeable number, because it can be changed into a prime (31123130020039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23429391 + ... + 24722107.

It is an arithmetic number, because the mean of its divisors is an integer number (1974135512160).

Almost surely, 2^{31123130020033} is an apocalyptic number.

It is an amenable number.

31123130020033 is a deficient number, since it is larger than the sum of its proper divisors (463038174527).

31123130020033 is a wasteful number, since it uses less digits than its factorization.

31123130020033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294056.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31123130020033 its reverse (33002003132113), we get a palindrome (64125133152146).

The spelling of 31123130020033 in words is "thirty-one trillion, one hundred twenty-three billion, one hundred thirty million, twenty thousand, thirty-three".