31130030021333 has 8 divisors (see below), whose sum is σ = 33065186838552. Its totient is φ = 29206426379776.

The previous prime is 31130030021287. The next prime is 31130030021411. The reversal of 31130030021333 is 33312003003113.

It can be written as a sum of positive squares in 4 ways, for example, as 460663553284 + 30669366468049 = 678722^2 + 5537993^2 .

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 31130030021333 - 2¹⁶ = 31130029955797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31130030021299 and 31130030021308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130090021333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2888288360 + ... + 2888299137.

It is an arithmetic number, because the mean of its divisors is an integer number (4133148354819).

Almost surely, 2^{31130030021333} is an apocalyptic number.

It is an amenable number.

31130030021333 is a deficient number, since it is larger than the sum of its proper divisors (1935156817219).

31130030021333 is a wasteful number, since it uses less digits than its factorization.

31130030021333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776587831.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 31130030021333 its reverse (33312003003113), we get a palindrome (64442033024446).

The spelling of 31130030021333 in words is "thirty-one trillion, one hundred thirty billion, thirty million, twenty-one thousand, three hundred thirty-three".