31233102113131 has 4 divisors (see below), whose sum is σ = 31233119015952. Its totient is φ = 31233085210312.

The previous prime is 31233102113099. The next prime is 31233102113149. The reversal of 31233102113131 is 13131120133213.

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

It is a cyclic number.

It is not a de Polignac number, because 31233102113131 - 2⁵ = 31233102113099 is a prime.

It is a super-2 number, since 2×31233102113131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31233102113096 and 31233102113105.

It is not an unprimeable number, because it can be changed into a prime (31233102113231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5284015 + ... + 9507208.

It is an arithmetic number, because the mean of its divisors is an integer number (7808279753988).

Almost surely, 2^{31233102113131} is an apocalyptic number.

31233102113131 is a deficient number, since it is larger than the sum of its proper divisors (16902821).

31233102113131 is a wasteful number, since it uses less digits than its factorization.

31233102113131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16902820.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 31233102113131 its reverse (13131120133213), we get a palindrome (44364222246344).

The spelling of 31233102113131 in words is "thirty-one trillion, two hundred thirty-three billion, one hundred two million, one hundred thirteen thousand, one hundred thirty-one".