31321033022131 has 4 divisors (see below), whose sum is σ = 31321325164264. Its totient is φ = 31320740880000.

The previous prime is 31321033022129. The next prime is 31321033022159. The reversal of 31321033022131 is 13122033012313.

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 31321033022131 - 2¹ = 31321033022129 is a prime.

It is a super-2 number, since 2×31321033022131² (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 = 31321033022096 and 31321033022105.

It is not an unprimeable number, because it can be changed into a prime (31321033022101) 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, 145910190 + ... + 146124691.

It is an arithmetic number, because the mean of its divisors is an integer number (7830331291066).

Almost surely, 2^{31321033022131} is an apocalyptic number.

31321033022131 is a deficient number, since it is larger than the sum of its proper divisors (292142133).

31321033022131 is a wasteful number, since it uses less digits than its factorization.

31321033022131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292142132.

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

Adding to 31321033022131 its reverse (13122033012313), we get a palindrome (44443066034444).

The spelling of 31321033022131 in words is "thirty-one trillion, three hundred twenty-one billion, thirty-three million, twenty-two thousand, one hundred thirty-one".