31440122 has 8 divisors (see below), whose sum is σ = 53897376. Its totient is φ = 13474332.

The previous prime is 31440119. The next prime is 31440127. The reversal of 31440122 is 22104413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31440122.

It is not an unprimeable number, because it can be changed into a prime (31440127) 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 3 ways as a sum of consecutive naturals, for example, 1122848 + ... + 1122875.

It is an arithmetic number, because the mean of its divisors is an integer number (6737172).

Almost surely, 2^31440122 is an apocalyptic number.

31440122 is a deficient number, since it is larger than the sum of its proper divisors (22457254).

31440122 is a wasteful number, since it uses less digits than its factorization.

31440122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245732.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 31440122 is about 5607.1491865296. The cubic root of 31440122 is about 315.6177413225.

Adding to 31440122 its reverse (22104413), we get a palindrome (53544535).

The spelling of 31440122 in words is "thirty-one million, four hundred forty thousand, one hundred twenty-two".