31122133 has 16 divisors (see below), whose sum is σ = 38736000. Its totient is φ = 24397632.

The previous prime is 31122101. The next prime is 31122173. The reversal of 31122133 is 33122113.

It is not a de Polignac number, because 31122133 - 2⁵ = 31122101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178 + ... + 7891.

It is an arithmetic number, because the mean of its divisors is an integer number (2421000).

Almost surely, 2^31122133 is an apocalyptic number.

It is an amenable number.

31122133 is a deficient number, since it is larger than the sum of its proper divisors (7613867).

31122133 is a wasteful number, since it uses less digits than its factorization.

31122133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8124.

The product of its digits is 108, while the sum is 16.

The square root of 31122133 is about 5578.7214485041. The cubic root of 31122133 is about 314.5500689922.

Adding to 31122133 its reverse (33122113), we get a palindrome (64244246).

The spelling of 31122133 in words is "thirty-one million, one hundred twenty-two thousand, one hundred thirty-three".