31320020033133 has 32 divisors (see below), whose sum is σ = 47340967564800. Its totient is φ = 18258802266816.

The previous prime is 31320020033083. The next prime is 31320020033153. The reversal of 31320020033133 is 33133002002313.

It is not a de Polignac number, because 31320020033133 - 2¹⁴ = 31320020016749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320020033153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20744166 + ... + 22202712.

It is an arithmetic number, because the mean of its divisors is an integer number (1479405236400).

Almost surely, 2^{31320020033133} is an apocalyptic number.

It is an amenable number.

31320020033133 is a deficient number, since it is larger than the sum of its proper divisors (16020947531667).

31320020033133 is a wasteful number, since it uses less digits than its factorization.

31320020033133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487561.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 31320020033133 its reverse (33133002002313), we get a palindrome (64453022035446).

The spelling of 31320020033133 in words is "thirty-one trillion, three hundred twenty billion, twenty million, thirty-three thousand, one hundred thirty-three".