31320340011133 has 4 divisors (see below), whose sum is σ = 31597511161788. Its totient is φ = 31043168860480.

The previous prime is 31320340011131. The next prime is 31320340011199. The reversal of 31320340011133 is 33111004302313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6697883752729 + 24622456258404 = 2588027^2 + 4962102^2 .

It is a cyclic number.

It is not a de Polignac number, because 31320340011133 - 2¹ = 31320340011131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31320340011098 and 31320340011107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320340011131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138585575158 + ... + 138585575383.

It is an arithmetic number, because the mean of its divisors is an integer number (7899377790447).

Almost surely, 2^{31320340011133} is an apocalyptic number.

It is an amenable number.

31320340011133 is a deficient number, since it is larger than the sum of its proper divisors (277171150655).

31320340011133 is a wasteful number, since it uses less digits than its factorization.

31320340011133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277171150654.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31320340011133 its reverse (33111004302313), we get a palindrome (64431344313446).

The spelling of 31320340011133 in words is "thirty-one trillion, three hundred twenty billion, three hundred forty million, eleven thousand, one hundred thirty-three".