31222001133 has 24 divisors (see below), whose sum is σ = 45961748352. Its totient is φ = 20416432608.

The previous prime is 31222001131. The next prime is 31222001147. The reversal of 31222001133 is 33110022213.

31222001133 is a `hidden beast` number, since 312 + 220 + 0 + 1 + 133 = 666.

It is not a de Polignac number, because 31222001133 - 2¹ = 31222001131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222001131) 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 23 ways as a sum of consecutive naturals, for example, 2523360 + ... + 2535702.

It is an arithmetic number, because the mean of its divisors is an integer number (1915072848).

Almost surely, 2^31222001133 is an apocalyptic number.

It is an amenable number.

31222001133 is a deficient number, since it is larger than the sum of its proper divisors (14739747219).

31222001133 is a wasteful number, since it uses less digits than its factorization.

31222001133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17705 (or 17702 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31222001133 its reverse (33110022213), we get a palindrome (64332023346).

The spelling of 31222001133 in words is "thirty-one billion, two hundred twenty-two million, one thousand, one hundred thirty-three".