31120133133 has 16 divisors (see below), whose sum is σ = 42184719360. Its totient is φ = 20402208816.

The previous prime is 31120133111. The next prime is 31120133159. The reversal of 31120133133 is 33133102113.

It is not a de Polignac number, because 31120133133 - 2¹² = 31120129037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120133183) 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, 13893 + ... + 249866.

It is an arithmetic number, because the mean of its divisors is an integer number (2636544960).

Almost surely, 2^31120133133 is an apocalyptic number.

It is an amenable number.

31120133133 is a deficient number, since it is larger than the sum of its proper divisors (11064586227).

31120133133 is a wasteful number, since it uses less digits than its factorization.

31120133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264416.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31120133133 its reverse (33133102113), we get a palindrome (64253235246).

The spelling of 31120133133 in words is "thirty-one billion, one hundred twenty million, one hundred thirty-three thousand, one hundred thirty-three".