31042344 has 32 divisors (see below), whose sum is σ = 77811840. Its totient is φ = 10320000.

The previous prime is 31042337. The next prime is 31042367. The reversal of 31042344 is 44324013.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 31042344.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8844 + ... + 11844.

It is an arithmetic number, because the mean of its divisors is an integer number (2431620).

Almost surely, 2^31042344 is an apocalyptic number.

It is an amenable number.

31042344 is an abundant number, since it is smaller than the sum of its proper divisors (46769496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31042344 is a wasteful number, since it uses less digits than its factorization.

31042344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441 (or 3437 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 31042344 is about 5571.5656686429. The cubic root of 31042344 is about 314.2810309416.

Adding to 31042344 its reverse (44324013), we get a palindrome (75366357).

The spelling of 31042344 in words is "thirty-one million, forty-two thousand, three hundred forty-four".