31020323133 has 8 divisors (see below), whose sum is σ = 41533488000. Its totient is φ = 20593686848.

The previous prime is 31020323069. The next prime is 31020323141. The reversal of 31020323133 is 33132302013.

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 31020323133 - 2⁶ = 31020323069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020323333) 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, 21631308 + ... + 21632741.

It is an arithmetic number, because the mean of its divisors is an integer number (5191686000).

Almost surely, 2^31020323133 is an apocalyptic number.

It is an amenable number.

31020323133 is a deficient number, since it is larger than the sum of its proper divisors (10513164867).

31020323133 is a wasteful number, since it uses less digits than its factorization.

31020323133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43264291.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31020323133 its reverse (33132302013), we get a palindrome (64152625146).

It can be divided in two parts, 310203 and 23133, that added together give a triangular number (333336 = T₈₁₆).

The spelling of 31020323133 in words is "thirty-one billion, twenty million, three hundred twenty-three thousand, one hundred thirty-three".