31222100133 has 32 divisors (see below), whose sum is σ = 53941664000. Its totient is φ = 17841194784.

The previous prime is 31222100131. The next prime is 31222100153. The reversal of 31222100133 is 33100122213.

31222100133 is a `hidden beast` number, since 312 + 221 + 0 + 0 + 133 = 666.

It is not a de Polignac number, because 31222100133 - 2¹ = 31222100131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222100131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1676416 + ... + 1694937.

It is an arithmetic number, because the mean of its divisors is an integer number (1685677000).

Almost surely, 2^31222100133 is an apocalyptic number.

It is an amenable number.

31222100133 is a deficient number, since it is larger than the sum of its proper divisors (22719563867).

31222100133 is an equidigital number, since it uses as much as digits as its factorization.

31222100133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3371383 (or 3371363 counting only the distinct ones).

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

Adding to 31222100133 its reverse (33100122213), we get a palindrome (64322222346).

The spelling of 31222100133 in words is "thirty-one billion, two hundred twenty-two million, one hundred thousand, one hundred thirty-three".