31133322022331 has 4 divisors (see below), whose sum is σ = 31136903455392. Its totient is φ = 31129740589272.

The previous prime is 31133322022289. The next prime is 31133322022357. The reversal of 31133322022331 is 13322022333113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31133322022331 is a prime.

It is a super-2 number, since 2×31133322022331² (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 = 31133322022294 and 31133322022303.

It is not an unprimeable number, because it can be changed into a prime (31133322022381) 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, 1790703491 + ... + 1790720876.

It is an arithmetic number, because the mean of its divisors is an integer number (7784225863848).

Almost surely, 2^{31133322022331} is an apocalyptic number.

31133322022331 is a deficient number, since it is larger than the sum of its proper divisors (3581433061).

31133322022331 is an equidigital number, since it uses as much as digits as its factorization.

31133322022331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581433060.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 31133322022331 its reverse (13322022333113), we get a palindrome (44455344355444).

The spelling of 31133322022331 in words is "thirty-one trillion, one hundred thirty-three billion, three hundred twenty-two million, twenty-two thousand, three hundred thirty-one".