31343122 has 16 divisors (see below), whose sum is σ = 49652640. Its totient is φ = 14797728.

The previous prime is 31343119. The next prime is 31343129. The reversal of 31343122 is 22134313.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 31343122.

It is not an unprimeable number, because it can be changed into a prime (31343129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11998 + ... + 14374.

It is an arithmetic number, because the mean of its divisors is an integer number (3103290).

Almost surely, 2^31343122 is an apocalyptic number.

31343122 is a deficient number, since it is larger than the sum of its proper divisors (18309518).

31343122 is a wasteful number, since it uses less digits than its factorization.

31343122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745.

The product of its digits is 432, while the sum is 19.

The square root of 31343122 is about 5598.4928328971. The cubic root of 31343122 is about 315.2928225274.

Adding to 31343122 its reverse (22134313), we get a palindrome (53477435).

The spelling of 31343122 in words is "thirty-one million, three hundred forty-three thousand, one hundred twenty-two".